Submitted URL: http://dev.37signals.com/
Effective URL: https://dev.37signals.com/
Submission: On May 03 via api from US — Scanned from NL

Summary

This website contacted 2 IPs in 2 countries across 1 domains to perform 31 HTTP transactions. The main IP is 188.114.97.3, located in Amsterdam, Netherlands and belongs to CLOUDFLARENET, US. The main domain is dev.37signals.com.
TLS certificate: Issued by E1 on April 23rd 2024. Valid for: 3 months.
This is the only time dev.37signals.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
29 188.114.97.3 13335 (CLOUDFLAR...)
2 104.18.0.135 13335 (CLOUDFLAR...)
31 2
Apex Domain
Subdomains
Transfer
31 37signals.com
dev.37signals.com
37signals.com — Cisco Umbrella Rank: 104857
1012 KB
31 1
Domain Requested by
29 dev.37signals.com dev.37signals.com
2 37signals.com dev.37signals.com
37signals.com
31 2

This site contains links to these domains. Also see Links.

Domain
37signals.com
basecamp.com
www.hey.com
Subject Issuer Validity Valid
dev.37signals.com
E1
2024-04-23 -
2024-07-22
3 months crt.sh
37signals.com
GTS CA 1P5
2024-04-14 -
2024-07-13
3 months crt.sh

This page contains 1 frames:

Primary Page: https://dev.37signals.com/
Frame ID: 288CC52429A65C332443EC19CEF07030
Requests: 31 HTTP requests in this frame

Screenshot

Page Title

37signals Dev — How we do, what we do

Page URL History Show full URLs

  1. http://dev.37signals.com/ HTTP 307
    https://dev.37signals.com/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <form [^>]*id="mc-embedded-subscribe-form"
  • <form [^>]*name="mc-embedded-subscribe-form"

Page Statistics

31
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

2
Subdomains

2
IPs

2
Countries

1012 kB
Transfer

1051 kB
Size

0
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://dev.37signals.com/ HTTP 307
    https://dev.37signals.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

31 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
dev.37signals.com/
Redirect Chain
  • http://dev.37signals.com/
  • https://dev.37signals.com/
45 KB
9 KB
Document
General
Full URL
https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
8c516fd3efd0c6c90661a5d4088539120f5e25b38a69522a6a2fd9f58f7e9096
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Accept-Language
nl-NL,nl;q=0.9;q=0.9
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Response headers

access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6feffec36679-AMS
content-encoding
br
content-type
text/html; charset=utf-8
date
Fri, 03 May 2024 10:06:15 GMT
etag
W/"2412e32dc15c542feccd2b4bd0bb311d"
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=TOk9WotrILfC1F9q3IekWT%2FE9Axz4fJ5goy6rtdoZt40mDOINHXGfqLmacxOZhyBZw5eW5998hqEuTBoVTUy7RS32htV8Nfy4RugFXyoBEsVK1Xo%2BqH6xCplBVtarVDH3SN5WQ%3D%3D"}],"group":"cf-nel","max_age":604800}
server
cloudflare
vary
Accept-Encoding
x-content-type-options
nosniff

Redirect headers

Location
https://dev.37signals.com/
Non-Authoritative-Reason
HttpsUpgrades
style.css
dev.37signals.com/assets/css/
21 KB
5 KB
Stylesheet
General
Full URL
https://dev.37signals.com/assets/css/style.css
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
b5b572dd19297b46604329af45b0f37442cbd4486139514c12fa9aebe037b39d
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
content-encoding
br
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
W/"fc35851e0627f0aabf95007f6c044f56"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=whX3fcgyoIWejbDadVE48vmxdc2M8HZqS0PvLyqt6isyPfijZR8ill07IxWTDpN%2FURd9QXDku4W0%2FuBv%2F6q03M8YYeSKihGWVvjw8Sf%2BWE2QHoGi6UUwPibPoRa76UjNpMC9iQ%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff07f306679-AMS
alt-svc
h3=":443"; ma=86400
script.js
dev.37signals.com/assets/js/
126 B
580 B
Script
General
Full URL
https://dev.37signals.com/assets/js/script.js
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
f09bba558e09d804531642cadd7bf7a29550e303bef674016dbcdbd595095e3e
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Origin
https://dev.37signals.com
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
content-encoding
br
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
W/"7144bda0d7680c1896082862b48fa066"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=mvy0VDgXoMBsWpu4CU5uNhcZjtxwIUN%2BHyiu5C%2Fr7ONiF7EmSchCII8%2FOhM0DmBUNtAyZ%2FuUg0R0OvOo6uJMJ%2BdsY97MLANqz4t5QWvGecDpUOKs6PQY8vMCQkncpLonzlJOsw%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
application/javascript
access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff07f326679-AMS
alt-svc
h3=":443"; ma=86400
script.js
37signals.com/js/
1 KB
1 KB
Script
General
Full URL
https://37signals.com/js/script.js
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.0.135 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
021f0fd27042b279a49e982215c6dc3c3ab84e95b35553a119dfdbd50af6be94
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
content-encoding
br
x-content-type-options
nosniff
cf-cache-status
HIT
cdn-edgestorageid
925
age
1441
cdn-cachedat
05/03/2024 04:54:02
cdn-pullzone
682664
cross-origin-resource-policy
cross-origin
application
10.0.1.5
alt-svc
h3=":443"; ma=86400
last-modified
Fri, 03 May 2024 09:42:14 GMT
cdn-proxyver
1.04
cdn-requestpullcode
200
server
cloudflare
vary
Accept-Encoding, Accept-Encoding
content-type
application/javascript
access-control-allow-origin
*
cdn-cache
HIT
cdn-uid
153cb5b1-399a-48ef-b5bf-098c03770254
cache-control
public, must-revalidate, max-age=86400
permissions-policy
interest-cohort=()
cdn-requestid
c7b8d4180a70dc57b71b8bf4529a6fff
cf-ray
87df6ff0cb0006e0-AMS
cdn-requestcountrycode
US
cdn-status
200
cdn-requestpullsuccess
True
jz.webp
dev.37signals.com/assets/images/authors/
41 KB
42 KB
Image
General
Full URL
https://dev.37signals.com/assets/images/authors/jz.webp
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
d19ef281e42f5d98a8e9b8a7a55b43d1318a528a361ef06c79ff967f4cd634c0
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"16645a48771ff446649b916bf3eb4670"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=1CAfXTncDpnCS1GNKID%2F5qUiZrwa4diN1B%2BReuwRXgr2QDrG%2F78%2FBdtCH%2F%2FMdZiWbIX%2B%2FihyWLad3Pv1iqHf7VSB1OOGXMqq6btr6VtVxt0F7ER66En6ISlLhRSRvBjYEFmA0A%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/webp
access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff07f336679-AMS
alt-svc
h3=":443"; ma=86400
content-length
42300
kevin.webp
dev.37signals.com/assets/images/authors/
26 KB
26 KB
Image
General
Full URL
https://dev.37signals.com/assets/images/authors/kevin.webp
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
a0339e4da56fa778d2c7437c0d656755d7764c5bafec032a7e7f49e2512bb520
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"cf1feb721b2fb1bc6d5a5422cbf07ac3"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=kUmCALJhse657wzqqVf7hBRE%2F1SRH6fLOaiRXb8SiyfWeBtRlp1xvdgcytrr3E88v1EtBCWJ%2FvMnwvcjZ3f6u2wTda0UNjwxw7OuDNUkT5FCmRz%2FtBX8IkUgbzE0ZOT1DjcBeQ%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/webp
access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff07f346679-AMS
alt-svc
h3=":443"; ma=86400
content-length
26204
jacopo.webp
dev.37signals.com/assets/images/authors/
13 KB
13 KB
Image
General
Full URL
https://dev.37signals.com/assets/images/authors/jacopo.webp
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
283fc1cebf6dda58d0ba902da302a2463efb4b992ccf47b52ec9f1ec1464cfa5
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"fc138f3fa81cf932fc3012dc679f9b1b"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=Nk7XwFt%2BpQ7ypsT3uxz%2BXp7xlj0dwLOJy9uSJ1dnR7ZMlKuqlBP8Oxrx9s%2FsOFYwCPzE73NCeGFxJEHzUiLGRorMiIsKkVh%2Fbx7QAHTu34ddLo7bSeSnTuBBL4hb90eLqY6JSA%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/webp
access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff08f516679-AMS
alt-svc
h3=":443"; ma=86400
content-length
13200
fernando-olivares.webp
dev.37signals.com/assets/images/authors/
28 KB
28 KB
Image
General
Full URL
https://dev.37signals.com/assets/images/authors/fernando-olivares.webp
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
9b820de5514e5667c85ad824a8a8ac3697da5ef962fa9dd1701a3b2fe8348549
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"bf81cf60b37b525bad9d848b6be057f2"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=Ev9aedKILwaey1P5SlM5dWBoVvxSr210sRk6sXQ02l3coPJ8sHsqrpQa51ZH9cnSJg%2B0sybLG49DvHFalbw17FJu6mGd1KRhpAEs3O0pDknm%2Fid7SEiCD%2BiAlxadv9nrtbLU9g%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/webp
access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff08f546679-AMS
alt-svc
h3=":443"; ma=86400
content-length
28674
alberto.webp
dev.37signals.com/assets/images/authors/
25 KB
25 KB
Image
General
Full URL
https://dev.37signals.com/assets/images/authors/alberto.webp
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
c4c55aa2ad23bbdc2a521a0811296f3d037182839287d26f691cf19d65893f19
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"95e2a2373f6e7a5c583da808106868a5"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=FSVlL2FQeK2kWOgWTpAg60zyif2eu4ldywfZ4yS0ozs2jWFI4cQ3wmjDthjGN%2FQIt%2FfWUA24JnC%2F58hljndYGbIDlwYJARySEJu%2F0A9AUJpUOw62w57QxirmT9TvTmUiO7XaKw%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/webp
access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff09f556679-AMS
alt-svc
h3=":443"; ma=86400
content-length
25156
rosa.webp
dev.37signals.com/assets/images/authors/
14 KB
14 KB
Image
General
Full URL
https://dev.37signals.com/assets/images/authors/rosa.webp
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
a4da8cddb44bd570602d5ba7897f9bbac8634b66a167e459b18f98972b069e55
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="124", "Not:A-Brand";v="8", "Chromium";v="124"
Referer
https://dev.37signals.com/
Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"cbc011308f0df8c94395dc89d2926bc6"
vary
Accept-Encoding
report-to
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Protocol
H3
Security
QUIC, , AES_128_GCM
Server
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sec-ch-ua
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
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server
cloudflare
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Protocol
H3
Security
QUIC, , AES_128_GCM
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188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
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cloudflare /
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Security Headers
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Request headers

sec-ch-ua
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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Requested by
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URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"c81c31576d50015a1dbde66899efb3ec"
vary
Accept-Encoding
report-to
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Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
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cloudflare /
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Security Headers
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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report-to
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General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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report-to
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30 KB
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General
Full URL
https://dev.37signals.com/assets/images/authors/arman.webp
Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
Accept-Encoding
report-to
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dev.37signals.com/assets/images/authors/
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47 KB
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General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"b345bcef05fd3b4743ba003e13d9b017"
vary
Accept-Encoding
report-to
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cf-ray
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dev.37signals.com/assets/images/authors/
55 KB
56 KB
Image
General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"964cefc4879942821b1fb9a35c86650d"
vary
Accept-Encoding
report-to
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cf-ray
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105 KB
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Image
General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"888cfbab79927a343959bc9c85d4c9ae"
vary
Accept-Encoding
report-to
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cf-ray
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content-length
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dev.37signals.com/assets/images/authors/
37 KB
38 KB
Image
General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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User-Agent
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
"43c8d6d5d63b1279217e59119127f3ab"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=9UyHcmEYdFQ1zTCgeO8giffHsndqoIPmsSCBc1%2B7KNmFx1YSapE5HFbqz6ht8e7%2Fem4pBB5mlsIbDF0PGjb4ZGNmFOr5G1%2Byd0ZWP9QL6h3aC8t%2BHDb9fubUOhIh%2FgV%2BsZUEbA%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type
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cf-ray
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alt-svc
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content-length
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dev.37signals.com/assets/images/authors/
34 KB
35 KB
Image
General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
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sec-ch-ua-mobile
?0
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
nl-NL,nl;q=0.9;q=0.9
sec-ch-ua-mobile
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User-Agent
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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report-to
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dev.37signals.com/assets/images/authors/
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Requested by
Host: dev.37signals.com
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Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
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cloudflare /
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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report-to
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dev.37signals.com/assets/images/authors/
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General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
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sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
content-encoding
br
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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General
Full URL
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Requested by
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URL: https://37signals.com/js/script.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.0.135 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

sec-ch-ua
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sec-ch-ua-platform
"Win32"
Referer
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sec-ch-ua-mobile
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Content-Type
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
cf-cache-status
DYNAMIC
cdn-edgestorageid
925
cdn-cachedat
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cdn-pullzone
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application
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alt-svc
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content-length
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cdn-proxyver
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cdn-requestpullcode
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server
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content-type
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access-control-allow-origin
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cache-control
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access-control-allow-credentials
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permissions-policy
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x-plausible-dropped
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cdn-requestid
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cf-ray
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cdn-requestcountrycode
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cdn-requestpullsuccess
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dev.37signals.com/assets/fonts/
48 KB
49 KB
Font
General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/assets/css/style.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Origin
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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report-to
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General
Full URL
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Requested by
Host: dev.37signals.com
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Protocol
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Security
QUIC, , AES_128_GCM
Server
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Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Origin
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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34 KB
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General
Full URL
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Requested by
Host: dev.37signals.com
URL: https://dev.37signals.com/assets/css/style.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
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Security Headers
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Request headers

sec-ch-ua
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
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vary
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URL: https://dev.37signals.com/assets/css/style.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
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Reverse DNS
Software
cloudflare /
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Security Headers
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Request headers

sec-ch-ua
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
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alt-svc
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favicon.png
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595 B
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General
Full URL
https://dev.37signals.com/assets/images/global/favicon.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Security Headers
Name Value
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Request headers

sec-ch-ua
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Referer
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Accept-Language
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sec-ch-ua-mobile
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sec-ch-ua-platform
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Response headers

date
Fri, 03 May 2024 10:06:15 GMT
referrer-policy
strict-origin-when-cross-origin
x-content-type-options
nosniff
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
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vary
Accept-Encoding
report-to
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content-type
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access-control-allow-origin
*
cache-control
public, max-age=0, must-revalidate
cf-ray
87df6ff1c86e6679-AMS
alt-svc
h3=":443"; ma=86400
content-length
595

Verdicts & Comments Add Verdict or Comment

1 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

function| plausible

0 Cookies

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
X-Content-Type-Options nosniff

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

37signals.com
dev.37signals.com
104.18.0.135
188.114.97.3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8aaa7970a793147bd65cb51b371ce8642fba759a32cb1f04a156acd3a74271a5
8c516fd3efd0c6c90661a5d4088539120f5e25b38a69522a6a2fd9f58f7e9096
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934cf586df7ea54794200b90293fe24e1c67f4f16bd5a2336455339090ad2982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