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vaclavkosar.com Open in urlscan Pro
188.114.97.3  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://vaclavkosar.com/
Effective URL: https://vaclavkosar.com/
Submission: On March 25 via api from US — Scanned from NL
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 2 IPs in 2 countries across 2 domains to perform 18 HTTP transactions. The main IP is 188.114.97.3, located in Amsterdam, Netherlands and belongs to CLOUDFLARENET, US. The main domain is vaclavkosar.com.
TLS certificate: Issued by E1 on March 6th 2024. Valid for: 3 months.
This is the only time vaclavkosar.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
17 188.114.97.3 13335 (CLOUDFLAR...)
1 2606:4700::68... 13335 (CLOUDFLAR...)
18 2
Apex Domain
Subdomains		 Transfer
17 vaclavkosar.com
vaclavkosar.com
3 MB
1 cloudflareinsights.com
static.cloudflareinsights.com — Cisco Umbrella Rank: 1397
7 KB
18 2
Domain Requested by
17 vaclavkosar.com vaclavkosar.com
static.cloudflareinsights.com
1 static.cloudflareinsights.com vaclavkosar.com
18 2
Subject Issuer Validity Valid
vaclavkosar.com
E1		 2024-03-06 -
2024-06-04		 3 months crt.sh
cloudflareinsights.com
GTS CA 1P5		 2024-03-10 -
2024-06-08		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://vaclavkosar.com/
Frame ID: 5952694A3FA3FB7F65738819B05A06F8
Requests: 18 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Vaclav Kosar’s Software & Machine Learning Blog

Page URL History Show full URLs

  1. http://vaclavkosar.com/ HTTP 307
    https://vaclavkosar.com/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]*?bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.css
  • bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.js
Overall confidence: 100%
Detected patterns
  • static\.cloudflareinsights\.com/beacon(?:\.min)?\.js
Overall confidence: 100%
Detected patterns
  • <form [^>]*id="mc-embedded-subscribe-form"
  • <form [^>]*name="mc-embedded-subscribe-form"

Page Statistics

18
Requests

100 %
HTTPS

50 %
IPv6

2
Domains

2
Subdomains

2
IPs

2
Countries

3000 kB
Transfer

3274 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://vaclavkosar.com/ HTTP 307
    https://vaclavkosar.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

18 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
vaclavkosar.com/
Redirect Chain
  • http://vaclavkosar.com/
  • https://vaclavkosar.com/
97 KB
23 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
79492f6b788baeef747380d679d446e50b2e30fc9b0a815ba9dfd5291787dcf9

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
accept-language
nl-NL,nl;q=0.9

Response headers

access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
max-age=600
cf-cache-status
DYNAMIC
cf-ray
869f1f832b246561-AMS
content-encoding
br
content-type
text/html; charset=utf-8
date
Mon, 25 Mar 2024 13:07:17 GMT
expires
Mon, 25 Mar 2024 13:17:17 GMT
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
priority
u=0,i
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=CWqocngU%2FVfWbH77EIbf9pdJTVDpf7tH%2F%2BO5hJZgUst7fRp0TarOX2z4N58urjQHg3jMjDmddcCCf8%2FAkIsaP1i0TWrFpOTItG35o%2BXPafB7T34HbWzEHxmNbuEhGFVqa58%3D"}],"group":"cf-nel","max_age":604800}
server
cloudflare
vary
Accept-Encoding
x-github-request-id
4B70:80E58:11A98F1:185552D:66017705
x-proxy-cache
MISS

Redirect headers

Location
https://vaclavkosar.com/
Non-Authoritative-Reason
HttpsUpgrades
bootstrap.min.css
vaclavkosar.com/css/ 		156 KB
25 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/css/bootstrap.min.css
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
2ff5b959fa9f6b4b1d04d20a37d706e90039176ab1e2a202994d9580baeebfd6

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:18 GMT
content-encoding
br
cf-cache-status
REVALIDATED
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
B610:1AF4:28C909:3575C7:65FBE640
etag
W/"65fbcb35-26f1b"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=KpEHys1vN8%2BtLfrNfrIiLnZk6d8uAmxU3ZmIdMLDEbWdJIoJuO4mfOAWfdvlaZkD7IEKnxr%2FwM17rqshRVOfzPJEE3NtCsNkrkPS1TIkRUgadOUPFwYKkG13WttoDWslmIE%3D"}],"group":"cf-nel","max_age":604800}
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
max-age=14400
x-origin-cache
HIT
cf-ray
869f1f851da66561-AMS
priority
u=0,i=?0
expires
Mon, 25 Mar 2024 13:17:18 GMT
main-2.css
vaclavkosar.com/css/ 		2 KB
1 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/css/main-2.css
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
c81cdd5fc51abf9d7ac58a660be37768fa573bd23c4d124722989e39f44e3c8a

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:17 GMT
content-encoding
br
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
548
cf-polished
origSize=2357
alt-svc
h3=":443"; ma=86400
cf-bgj
minify
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
x-github-request-id
B5B6:75AD0:293A3FF:2FC9672:65FBE640
server
cloudflare
etag
W/"65fbcb35-935"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=D9cjOF3fzrjRzRFpa1fTA8zYf3LtpefkDcvDN8r03Kk3%2B5xrhlK%2Fxo%2FA%2BBbCQGg9vYmLk6eOXoV7rZuScCjgy15KFjZIdNtIKYC5KjCpvKxlsf%2BYjp7iA93GdiE93x35DVc%3D"}],"group":"cf-nel","max_age":604800}
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
max-age=14400
cf-ray
869f1f851da96561-AMS
priority
u=0,i=?0
expires
Mon, 25 Mar 2024 13:08:08 GMT
vaclav-kosar-square-2022.png
vaclavkosar.com/ 		15 KB
16 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/vaclav-kosar-square-2022.png
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
e48161bd07ae53c55835af3f03b807326f31ff08ce88e1ae3818d41c49e9688c

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:17 GMT
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
548
alt-svc
h3=":443"; ma=86400
content-length
15574
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
5148:C2A45:2C2B24F:32BA7EB:65FBE640
etag
"65fbcb35-3cd6"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=VO6nS19tF6JCQjh0qmT39ZoYugdJ3ptSXMLfXpRqOFz%2Bu2uyLdDJqVdhEP5cuUPEKFtNSbopou%2FafyDWudcmp3FH0HBicacLMKcUzkXaY4eOnlOsJ5a7Kfx6xj4EIAwzy2g%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
cf-ray
869f1f851daa6561-AMS
priority
u=2,i
expires
Mon, 25 Mar 2024 13:08:08 GMT
thank-you.svg
vaclavkosar.com/images/ 		55 KB
4 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/thank-you.svg
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
fe3e9e329e67412ee6d6668686d6229492b459c55938dcd5f307a694f3b4cb87

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:17 GMT
content-encoding
br
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
548
alt-svc
h3=":443"; ma=86400
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
55BA:62BE:31083F:4029A6:65FE576B
etag
W/"65fbcb35-dc26"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=63sjdyt2HIYiA6vZW%2BlKRde2dcbdagyZt8Yfiri8C1Z16Cr%2FZumqRKjAyAlOrJamftpDnb558VaRQxWKNJHtmJde1eJficnv9aJQjkRq%2FO9N6upAgPOCaKRbyEUgZ%2FlnUiw%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/svg+xml
access-control-allow-origin
*
cache-control
max-age=14400
cf-ray
869f1f851dac6561-AMS
priority
u=2,i
expires
Mon, 25 Mar 2024 13:08:09 GMT
vaclav-kosar-2022-mirror-edited-removebg-56-61.png
vaclavkosar.com/images/me/ 		6 KB
7 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/me/vaclav-kosar-2022-mirror-edited-removebg-56-61.png
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
d7d6189754ecb046c5fd660882e06716d07302f9ad723425fe7225ad4d7e35d3

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:18 GMT
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
549
alt-svc
h3=":443"; ma=86400
content-length
6089
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
C228:9D0F:2F601D:3C7DDE:65FBE640
etag
"65fbcb35-17c9"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=0VfxgFtBuCZkPHW4rHT6cfhMa3nXd8CvIOjWCPiAwNcFx1X6ffvJEHTPjzxolUNQKdu7K45jHZg0kkxGt%2Boxb3sM55Df5ypHjzsoGu00u%2BtqX%2BSS81nolWHKzzfiqtQHQ14%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
x-origin-cache
HIT
cf-ray
869f1f857e0a6561-AMS
priority
u=3,i
expires
Mon, 25 Mar 2024 13:08:09 GMT
rocket-loader.min.js
vaclavkosar.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/ 		12 KB
4 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
ccf00d1923b0131a10e0c6d26f95e5dee6ebf8621a27e83c5a2f68a2e0093142
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Mon, 25 Mar 2024 13:07:18 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Thu, 21 Mar 2024 10:35:23 GMT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server
cloudflare
etag
W/"65fc0d6b-302c"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=29WUalua8jNsF3laSiZsRlQmhZO2xoOe85kKCazwzG%2FOby0GEZH1zr%2B4O7CiZBQtm8%2FVhNPyR4gPqa%2Ba4n%2BjWow3XuuNzDDbYm8UZ4G2vZU8C%2BHMpF6j4uo4DQ6VEySPM0Q%3D"}],"group":"cf-nel","max_age":604800}
content-type
application/javascript
x-frame-options
DENY
cache-control
max-age=172800, public
cf-ray
869f1f858e0d6561-AMS
expires
Wed, 27 Mar 2024 13:07:18 GMT
v84a3a4012de94ce1a686ba8c167c359c1696973893317
static.cloudflareinsights.com/beacon.min.js/ 		20 KB
7 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://static.cloudflareinsights.com/beacon.min.js/v84a3a4012de94ce1a686ba8c167c359c1696973893317
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6810:4f49 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
6153d13804862b0fc1c016cf1129f34cb7c6185f2cf4bf1a3a862eecdab50101

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
Origin
https://vaclavkosar.com
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Mon, 25 Mar 2024 13:07:18 GMT
content-encoding
gzip
last-modified
Tue, 10 Oct 2023 21:38:13 GMT
server
cloudflare
etag
W/"2023.10.0"
vary
Accept-Encoding
content-type
text/javascript;charset=UTF-8
access-control-allow-origin
*
cache-control
public, max-age=86400
cross-origin-resource-policy
cross-origin
cf-ray
869f1f85b930661f-AMS
lazysizes.min.js
vaclavkosar.com/js/ 		8 KB
4 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/js/lazysizes.min.js
Requested by
Host: vaclavkosar.com
URL: https://vaclavkosar.com/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
46112dbceed738f759d03f04b115d5256a7d73660b7795acb382192ad84d9f98

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:18 GMT
content-encoding
br
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
549
alt-svc
h3=":443"; ma=86400
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
4FD8:6AD3:1630349:1AEA066:65FBE640
etag
W/"65fbcb35-1ed1"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=SGU65oaY0xUhvewucBVOys7ccKv4EXdbhZf8YfnKDQjbeOKJGB87%2B9zb0Ebn4MiHBpIP0qT1ef%2Btv%2FUR%2FgzzysNt8v9wv0zz54eV9klrEtPsvBBI8beu9DjfMxGueG0jd4o%3D"}],"group":"cf-nel","max_age":604800}
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
max-age=14400
cf-ray
869f1f870fe26561-AMS
priority
u=1,i=?0
expires
Mon, 25 Mar 2024 13:08:09 GMT
rum
vaclavkosar.com/cdn-cgi/ 		0
141 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/cdn-cgi/rum?
Requested by
Host: static.cloudflareinsights.com
URL: https://static.cloudflareinsights.com/beacon.min.js/v84a3a4012de94ce1a686ba8c167c359c1696973893317
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
sec-ch-ua-platform
"Win32"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
content-type
application/json

Response headers

date
Mon, 25 Mar 2024 13:07:18 GMT
x-content-type-options
nosniff
server
cloudflare
vary
Origin
access-control-max-age
86400
access-control-allow-methods
POST,OPTIONS
access-control-allow-origin
https://vaclavkosar.com
x-frame-options
DENY
access-control-allow-credentials
true
cf-ray
869f1f8768556561-AMS
robot-writing-synthetic-data-thumb.webp
vaclavkosar.com/images/ 		646 KB
647 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/robot-writing-synthetic-data-thumb.webp
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
7407f342cb92ac6eb55333408b56533dbd709aeda68b9651158e1974ce9a4d1a

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:18 GMT
cf-cache-status
REVALIDATED
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
content-length
661400
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
E92A:D67F2:70F0EF:85DCF2:660047DF
etag
"65fbcb35-a1798"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=%2B%2F6dzgl3wLpzEv8EbFfzGwNOxbyeHhnmt4JCQWDOT3qUutJSw5FwhMTqPxQIKMK0aLm38sXwVqNNzFKmCB20xMTTRJhyDiJDAfoSVZNqYX4mMMO9mK27bJWQxb%2FVAy33ZQ0%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/webp
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
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cf-ray
869f1f8788756561-AMS
priority
u=3,i
expires
Mon, 25 Mar 2024 13:17:18 GMT
favicon.ico
vaclavkosar.com/ 		1 KB
1 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/favicon.ico
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
85cb8ec543e657fcad1119027e425c658aafc30cab80d4fd4df82481ec893d5d

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:18 GMT
content-encoding
br
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
549
alt-svc
h3=":443"; ma=86400
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
9C9E:DB590:3A8786F:433344B:65FD0BF5
etag
W/"65fbcb35-47e"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=imZ5%2BBWCkZtHz1XpdfjvJWgEQnQYUVeWDwlFkVXdu4f%2FyviSyNUelpOOS8Jolr8WFXVxiKxrMvTTfEBti%2FISQH9VOTecrlfaFJYZkLJ7Ft%2B4kNyn9PmDRvg0xxVbGMHPHRg%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/vnd.microsoft.icon
access-control-allow-origin
*
cache-control
max-age=14400
cf-ray
869f1f8788766561-AMS
priority
u=1,i
expires
Mon, 25 Mar 2024 13:08:09 GMT
favicon-32x32.png
vaclavkosar.com/images/icons/ 		4 KB
4 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://vaclavkosar.com/images/icons/favicon-32x32.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
3555fe8c198ecfac1bc9e65f74cb54ee21a4d3535d025acb1ea962dc32e93ae3

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:18 GMT
cf-cache-status
HIT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age
548
alt-svc
h3=":443"; ma=86400
content-length
3813
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
7308:3001CC:2B3A1FA:31B3A01:65FBDA61
etag
"65fbcb35-ee5"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=yOp7LAkfQIVVc7rr4nAwxMmxLqC5TG6p9HcXl9dpq51Zy%2Bx1TjADktNW1khIZ1xhtamW%2B53varw%2Bk0fmmkBmxD%2FphHH65FbE9uMmwOf%2BeeYThu%2BLFxT93H0Kxiql9YSAKUc%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
cf-ray
869f1f87b8ab6561-AMS
priority
u=1,i
expires
Mon, 25 Mar 2024 13:08:10 GMT
ubuntu-install-python-pyenv-conda-thumb.png
vaclavkosar.com/images/ 		1000 KB
1001 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/ubuntu-install-python-pyenv-conda-thumb.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
e295f7c12064180233e827f87a7a775ab1c97d13ca0fd7fc5beaf2415d286ce7

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:19 GMT
cf-cache-status
REVALIDATED
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
content-length
1024077
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
3214:16E9:FC539:140320:65FBFA40
etag
"65fbcb35-fa04d"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=1PHIWazV79SOhcRYh7W1bnBnRBMxJsDsPDpduEr1wNqMqpmF73sueQ9qSlPx%2BlzdH6ZUPDQsufm86eh1ENclLtuy9wOVOx3zgJgw5EXBJdkkxgV7YFdKg9Z87iumn3mNa9E%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
cf-ray
869f1f8dc8176561-AMS
priority
u=3,i
expires
Mon, 25 Mar 2024 13:17:19 GMT
python-lambda-late-binding-repeated-final-value-bug-error.png
vaclavkosar.com/images/ 		37 KB
38 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/python-lambda-late-binding-repeated-final-value-bug-error.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
e5b8fca562ca8cad36cc90520bc144f791ffa48769101eff26aa6e39e672ff19

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:19 GMT
cf-cache-status
MISS
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
content-length
37972
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
F824:7CAEF:48AB4E:5586A4:66017707
etag
"65fbcb35-9454"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=Su560dz34EAUViLouJCfvdNXHbRrub8dn5yVzE1D6uNrcTGNsoLzUr3K7z77OQ%2By4dLLR6ri96GxgxUzbieqlPyRJk0MabIdmdYf%2BOR0hfssjRG3MWl1c9sx50e8ElI2yj0%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
cf-ray
869f1f8dc81a6561-AMS
priority
u=3,i
expires
Mon, 25 Mar 2024 13:17:19 GMT
bellman-update-q-transformer-thumb.png
vaclavkosar.com/images/ 		29 KB
30 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/bellman-update-q-transformer-thumb.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
073944604585598c61f5aca2b5f82a8c549639399353d7366f4d2010d697c40e

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:19 GMT
cf-cache-status
REVALIDATED
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
content-length
29701
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
6C40:0E4A:D29200:11A5EFC:660047DF
etag
"65fbcb35-7405"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=rPT3b0lw8jEGDYYQYt7mPaRwjt4ptCIJWautbEKuG0nTApz5Wa7VqPtePwvKcw2zsI9sv8nXDaQ8LTxt%2FwVXvEztVwu0aOiTVVNLqwmR4lsmg2uyGvW3hfCHIp78VkdTYp4%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
x-origin-cache
HIT
cf-ray
869f1f8e88f46561-AMS
priority
u=3,i
expires
Mon, 25 Mar 2024 13:17:19 GMT
sphere-with-writtings-on-it.webp
vaclavkosar.com/images/ 		275 KB
276 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/sphere-with-writtings-on-it.webp
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
8762fc868bbfb7763dbceb7a6941743e335dbbbedbcbbe461578d5185e08e8f1

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:19 GMT
cf-cache-status
REVALIDATED
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
content-length
281670
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
86C8:1D6746:8BEDB0:A3F4E2:65FF26B9
etag
"65fbcb35-44c46"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=cd1weAtmI9ZOXbQJJGpSDf9PE%2BLo%2F7ASNBKm6OrA1frXZWpreOuH12nkV5w%2BLPXgpL%2BvUc5TAYpuBqJeVPV8WbZ2DiPtLALtM1RMKv8XGIUL20hJyDppke4rmKwirFs%2FNSQ%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/webp
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
x-origin-cache
HIT
cf-ray
869f1f8e88f76561-AMS
priority
u=3,i
expires
Mon, 25 Mar 2024 13:17:19 GMT
rockefeller-and-letters.png
vaclavkosar.com/images/ 		912 KB
913 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://vaclavkosar.com/images/rockefeller-and-letters.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
188.114.97.3 Amsterdam, Netherlands, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
bd90448b430533b17f62728608fb6a736b0f5ffc825e978c5086b8c3de74065d

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://vaclavkosar.com/
accept-language
nl-NL,nl;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/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

x-proxy-cache
MISS
date
Mon, 25 Mar 2024 13:07:19 GMT
cf-cache-status
MISS
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
content-length
934078
last-modified
Thu, 21 Mar 2024 05:52:53 GMT
server
cloudflare
x-github-request-id
B092:71708:497D15:566528:66017707
etag
"65fbcb35-e40be"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=Gf2Yqo7DdHEIX7ZJIMl44VDS0OJmp11K8nJ93roU%2BBhPMSNM4IG56%2B9yAtJs6%2B%2BEkuKS%2B8GKGxReJk6uWN%2B4W4%2FEU%2BPJV7d%2BRreu5Bb0WB%2F4BViXo5yjpV13u9DiTysE6Aw%3D"}],"group":"cf-nel","max_age":604800}
content-type
image/png
access-control-allow-origin
*
cache-control
max-age=14400
accept-ranges
bytes
cf-ray
869f1f8e88f96561-AMS
priority
u=3,i
expires
Mon, 25 Mar 2024 13:17:19 GMT

Verdicts & Comments Add Verdict or Comment

5 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.

object| onpagereveal object| __cfQR object| __cfBeacon boolean| __cfRLUnblockHandlers object| lazySizes

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