blog.backendengineering.io Open in urlscan Pro
104.18.11.223 Public Scan

Go To Rescan
Add Verdict Report

URL:
https://blog.backendengineering.io/
Submission: On August 20 via api (August 20th 2024, 5:29:49 am UTC) from US — Scanned from US

Summary HTTP 297 Redirects Links 18 Behaviour Indicators

Summary

This website contacted 12 IPs in 2 countries across 11 domains to perform 297 HTTP transactions. The main IP is 104.18.11.223, located in and belongs to CLOUDFLARENET, US. The main domain is blog.backendengineering.io.
TLS certificate: Issued by WE1 on August 18th 2024. Valid for: 3 months.

This is the only time blog.backendengineering.io was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
13	104.18.11.223 104.18.11.223	13335 (CLOUDFLAR...) (CLOUDFLARENET)
26	2600:9000:220... 2600:9000:2209:c00:4:b4b9:d3c0:93a1	16509 (AMAZON-02) (AMAZON-02)
2	2607:f8b0:400... 2607:f8b0:4006:820::2008	15169 (GOOGLE) (GOOGLE)
1	2a04:4e42:200... 2a04:4e42:200::729	54113 (FASTLY) (FASTLY)
4	2606:4700::68... 2606:4700::6810:4f49	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	108.138.124.46 108.138.124.46	16509 (AMAZON-02) (AMAZON-02)
2	2607:f8b0:400... 2607:f8b0:4006:80e::200e	15169 (GOOGLE) (GOOGLE)
1	2606:4700::68... 2606:4700::6812:bdf	13335 (CLOUDFLAR...) (CLOUDFLARENET)
244	52.85.61.34 52.85.61.34	16509 (AMAZON-02) (AMAZON-02)
1	2607:f8b0:400... 2607:f8b0:4006:81d::2003	15169 (GOOGLE) (GOOGLE)
1	142.250.80.2 142.250.80.2	15169 (GOOGLE) (GOOGLE)
1	142.250.80.100 142.250.80.100	15169 (GOOGLE) (GOOGLE)
297	12

13 104.18.11.223 (None, )

ASN13335 (CLOUDFLARENET, US)

blog.backendengineering.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

26 2600:9000:2209:c00:4:b4b9:d3c0:93a1 (United States)

ASN16509 (AMAZON-02, US)

substackcdn.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2607:f8b0:4006:820::2008 (United States)

ASN15169 (GOOGLE, US)

www.googletagmanager.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a04:4e42:200::729 (United States)

ASN54113 (FASTLY, US)

js.sentry-cdn.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 2606:4700::6810:4f49 (United States)

ASN13335 (CLOUDFLARENET, US)

static.cloudflareinsights.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
cloudflareinsights.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 108.138.124.46 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-108-138-124-46.jfk50.r.cloudfront.net

www.datadoghq-browser-agent.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2607:f8b0:4006:80e::200e (United States)

ASN15169 (GOOGLE, US)

www.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2606:4700::6812:bdf (United States)

ASN13335 (CLOUDFLARENET, US)

substack.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

244 52.85.61.34 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-52-85-61-34.ewr53.r.cloudfront.net

substackcdn.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2607:f8b0:4006:81d::2003 (United States)

ASN15169 (GOOGLE, US)

fonts.gstatic.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 142.250.80.2 (Plainview, United States)

ASN15169 (GOOGLE, US)
PTR: lga34s33-in-f2.1e100.net

googleads.g.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 142.250.80.100 (Plainview, United States)

ASN15169 (GOOGLE, US)
PTR: lga34s36-in-f4.1e100.net

www.google.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
270	substackcdn.com substackcdn.com — Cisco Umbrella Rank: 19777	1 MB
13	backendengineering.io blog.backendengineering.io	39 KB
4	cloudflareinsights.com static.cloudflareinsights.com — Cisco Umbrella Rank: 1223 cloudflareinsights.com — Cisco Umbrella Rank: 1204	14 KB
2	google-analytics.com www.google-analytics.com — Cisco Umbrella Rank: 104	315 B
2	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 112	190 KB
1	google.com www.google.com — Cisco Umbrella Rank: 10	64 B
1	doubleclick.net googleads.g.doubleclick.net — Cisco Umbrella Rank: 77	1 KB
1	gstatic.com fonts.gstatic.com	14 KB
1	substack.com substack.com — Cisco Umbrella Rank: 17765
1	datadoghq-browser-agent.com www.datadoghq-browser-agent.com — Cisco Umbrella Rank: 2536	51 KB
1	sentry-cdn.com js.sentry-cdn.com — Cisco Umbrella Rank: 7016	2 KB
297	11

	Domain	Requested by
270	substackcdn.com	blog.backendengineering.io substackcdn.com
13	blog.backendengineering.io	blog.backendengineering.io www.datadoghq-browser-agent.com
2	cloudflareinsights.com	www.datadoghq-browser-agent.com
2	www.google-analytics.com	www.datadoghq-browser-agent.com
2	static.cloudflareinsights.com	blog.backendengineering.io
2	www.googletagmanager.com	blog.backendengineering.io substackcdn.com
1	www.google.com
1	googleads.g.doubleclick.net	www.googletagmanager.com
1	fonts.gstatic.com	blog.backendengineering.io
1	substack.com	substackcdn.com
1	www.datadoghq-browser-agent.com	blog.backendengineering.io
1	js.sentry-cdn.com	blog.backendengineering.io
297	12

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

Domain
substack.com
www.youtube.com
www.linkedin.com
backendengineering.io
jessicareedkraus.substack.com
newsletter.pragmaticengineer.com
newsletter.doomberg.com
www.public.news

Subject Issuer	Validity	Valid
blog.backendengineering.io WE1	`2024-08-18` - `2024-11-16`	3 months	crt.sh
substackcdn.com Amazon RSA 2048 M02	`2024-02-13` - `2025-03-13`	a year	crt.sh
*.google-analytics.com WR2	`2024-07-30` - `2024-10-22`	3 months	crt.sh
*.sentry-cdn.com GlobalSign Atlas R3 DV TLS CA 2024 Q2	`2024-06-04` - `2025-07-06`	a year	crt.sh
cloudflareinsights.com WE1	`2024-07-06` - `2024-10-04`	3 months	crt.sh
*.datadoghq-browser-agent.com DigiCert Global G2 TLS RSA SHA256 2020 CA1	`2024-07-30` - `2025-08-03`	a year	crt.sh
substack.com WE1	`2024-08-13` - `2024-11-11`	3 months	crt.sh
*.gstatic.com WR2	`2024-07-30` - `2024-10-22`	3 months	crt.sh
*.g.doubleclick.net WR2	`2024-07-30` - `2024-10-22`	3 months	crt.sh
*.google.com WR2	`2024-07-30` - `2024-10-22`	3 months	crt.sh

This page contains 2 frames:

Primary Page: https://blog.backendengineering.io/
Frame ID: 0C69D1378C6C5D07B1868E5366195D52
Requests: 295 HTTP requests in this frame

Frame: https://substack.com/channel-frame
Frame ID: 70EADC9B7BF3E6FD051C0AD9DF5948C1
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Backend Engineering School | Suchait Gaurav | Substack

Detected technologies

Cloudflare Browser Insights (Analytics) Expand

Overall confidence: 100%
Detected patterns

static\.cloudflareinsights\.com/beacon(?:\.min)?\.js

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtag/js

Page Statistics

297
Requests

100 %
HTTPS

58 %
IPv6

11
Domains

12
Subdomains

12
IPs

2
Countries

1782 kB
Transfer

4608 kB
Size

17
Cookies

18 Outgoing links

These are links going to different origins than the main page.

URL: https://substack.com/tos
Title: Terms of Service

Search URL Search Domain Scan URL

URL: https://substack.com/privacy
Title: Privacy Policy

Search URL Search Domain Scan URL

URL: https://substack.com/ccpa#personal-data-collected
Title: Information Collection Notice

Search URL Search Domain Scan URL

URL: https://www.youtube.com/@suchaitgaurav
Title: Youtube Channel

Search URL Search Domain Scan URL

URL: https://www.linkedin.com/in/suchait-gaurav-944479109/
Title: Linkedin Profile

Search URL Search Domain Scan URL

URL: https://backendengineering.io/
Title: backendengineering.io

Search URL Search Domain Scan URL

URL: https://substack.com/@suchaitgaurav
Title: Suchait Gaurav

Search URL Search Domain Scan URL

URL: https://jessicareedkraus.substack.com/?utm_source=homepage_recommendations&utm_campaign=2491227
Title: House Inhabit Jessica Reed Kraus

Search URL Search Domain Scan URL

URL: https://jessicareedkraus.substack.com/

Search URL Search Domain Scan URL

URL: https://newsletter.pragmaticengineer.com/?utm_source=homepage_recommendations&utm_campaign=2491227
Title: The Pragmatic EngineerGergely Orosz

Search URL Search Domain Scan URL

URL: https://newsletter.pragmaticengineer.com/

Search URL Search Domain Scan URL

URL: https://newsletter.doomberg.com/?utm_source=homepage_recommendations&utm_campaign=2491227
Title: DoombergDoomberg

Search URL Search Domain Scan URL

URL: https://newsletter.doomberg.com/

Search URL Search Domain Scan URL

URL: https://www.public.news/?utm_source=homepage_recommendations&utm_campaign=2491227
Title: PublicMichael Shellenberger

Search URL Search Domain Scan URL

URL: https://www.public.news/

Search URL Search Domain Scan URL

URL: https://substack.com/signup?utm_source=substack&utm_medium=web&utm_content=footer
Title: Start Writing

Search URL Search Domain Scan URL

URL: https://substack.com/app/app-store-redirect?utm_campaign=app-marketing&utm_content=web-footer-button
Title: Get the app

Search URL Search Domain Scan URL

URL: https://substack.com/
Title: Substack

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

297 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H3 200 Primary Request / Show response
blog.backendengineering.io/ 58 KB
14 KB 662ms
359ms Document
text/html 104.18.11.223
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://blog.backendengineering.io/

Protocol

Security

QUIC, , AES_128_GCM

Server

104.18.11.223 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare / Express

Resource Hash

1cb2710f2582313eafb3d21754b66c25377440bac8a550b275897481a5bfe5c0

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Frame-Options	sameorigin

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

alt-svc: h3=":443"; ma=86400
cache-control: no-cache
cf-cache-status: EXPIRED
cf-ray: 8b5ffcabcd532eed-LAX
content-encoding: br
content-type: text/html; charset=utf-8
date: Tue, 20 Aug 2024 05:29:40 GMT
link: <https://substackcdn.com>; rel=preconnect
server: cloudflare
strict-transport-security: max-age=31536000
vary: Accept-Encoding
x-cluster: substack
x-deploy: 1cb74ec79f
x-frame-options: sameorigin
x-powered-by: Express
x-served-by: Substack
x-service: web
x-sub: suchait

GET
H2 200 welcome.c974124c1ea15d7faf1d.css
substackcdn.com/bundle/theme/ 33 KB
6 KB 186ms
168ms Stylesheet
text/css 2600:9000:2209:c00:4:b4b9:d3c0:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/theme/welcome.c974124c1ea15d7faf1d.css
Requested by: Host: blog.backendengineering.io
URL: https://blog.backendengineering.io/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2209:c00:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: a7e4343c911e84f4baaf7d93040899b94b634c2743f7d4a4723d56647c2c22f1

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date: Mon, 19 Aug 2024 22:25:24 GMT
content-encoding: br
via: 1.1 0812978283e8debc2d404f4a7b32d866.cloudfront.net (CloudFront)
x-amz-cf-pop: EWR53-P1
age: 25457
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Sun, 16 Feb 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Mon, 19 Aug 2024 22:24:39 GMT
server: AmazonS3
etag: W/"c974124c1ea15d7faf1d2f9b98c33237"
vary: Accept-Encoding, Origin
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: c8V_8hp8R_v2JgSISmHKBo94beMkbjn-FXAVK_p5lFQHa56_Z6zEsA==

GET
H2 200 color_links.33eb7c3bd37d78bc2dc3.css
substackcdn.com/bundle/theme/ 2 KB
922 B 191ms
173ms Stylesheet
text/css 2600:9000:2209:c00:4:b4b9:d3c0:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/theme/color_links.33eb7c3bd37d78bc2dc3.css
Requested by: Host: blog.backendengineering.io
URL: https://blog.backendengineering.io/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2209:c00:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: d5c601aa9b482ec9dc03c2fe73909cf5b1504c16b91744c3a56f6c57eea4d84d

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date: Mon, 19 Aug 2024 12:18:53 GMT
content-encoding: gzip
via: 1.1 0812978283e8debc2d404f4a7b32d866.cloudfront.net (CloudFront)
x-amz-cf-pop: EWR53-P1
age: 61848
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Fri, 14 Feb 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Sat, 17 Aug 2024 05:02:04 GMT
server: AmazonS3
etag: W/"33eb7c3bd37d78bc2dc39c14920dac7e"
vary: Accept-Encoding, Origin
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: nD2VNcIx8jaNzdHZS8bIp_l1OsWBn0R0d4Nv2zQbX8a9e50R6nbTDA==

GET
H2 200 entry-c6430343.css
substackcdn.com/bundle/assets/ 10 KB
2 KB 195ms
177ms Stylesheet
text/css 2600:9000:2209:c00:4:b4b9:d3c0:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/assets/entry-c6430343.css
Requested by: Host: blog.backendengineering.io
URL: https://blog.backendengineering.io/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2209:c00:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: c64303437d5b1bec541404e99a711629e3131f5b6b78997dae1ee5ec800dc22a

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date: Tue, 20 Aug 2024 02:59:47 GMT
content-encoding: gzip
via: 1.1 0812978283e8debc2d404f4a7b32d866.cloudfront.net (CloudFront)
x-amz-cf-pop: EWR53-P1
age: 8994
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Fri, 14 Feb 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Sat, 17 Aug 2024 05:02:08 GMT
server: AmazonS3
etag: W/"eeef5485231ecd15fab9406cfaf66fcc"
vary: Accept-Encoding, Origin
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: D5mqBuvjVnxlZFVG4SSWAcMytTvh4bA2S6OQlAO8HfJarzfgk6Ek6g==

GET
H2 200 responsive_img-51b02764.css
substackcdn.com/bundle/assets/ 92 B
605 B 184ms
168ms Stylesheet
text/css 2600:9000:2209:c00:4:b4b9:d3c0:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/assets/responsive_img-51b02764.css
Requested by: Host: blog.backendengineering.io
URL: https://blog.backendengineering.io/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2209:c00:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 51b02764ec5dd7b6337c0ee7044ae5b5418d3a8605fe309d5a0927dcaa72aa05

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date: Mon, 19 Aug 2024 12:18:53 GMT
via: 1.1 0812978283e8debc2d404f4a7b32d866.cloudfront.net (CloudFront)
x-amz-cf-pop: EWR53-P1
age: 61848
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
content-length: 92
x-amz-expiration: expiry-date="Fri, 14 Feb 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Sat, 17 Aug 2024 05:02:08 GMT
server: AmazonS3
etag: "37c57b11ce88b609c07decff04a21205"
vary: Accept-Encoding, Origin
content-type: text/css
cache-control: public, max-age=31536000, immutable
accept-ranges: bytes
x-amz-cf-id: uMOfOESUGMcg8yxy-p4djXDgwBnKIRjV61sDW9SOePCR7bzM637nHw==

GET
H2 200 FlexBox-9653b903.css
substackcdn.com/bundle/assets/ 103 KB
14 KB 173ms
157ms Stylesheet
text/css 2600:9000:2209:c00:4:b4b9:d3c0:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/assets/FlexBox-9653b903.css
Requested by: Host: blog.backendengineering.io
URL: https://blog.backendengineering.io/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2209:c00:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 9653b9030dec79cd45a2f58545a39abf6179ca532e28c9de170dbdb8bebddf01

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date: Mon, 19 Aug 2024 08:03:17 GMT
content-encoding: gzip
via: 1.1 0812978283e8debc2d404f4a7b32d866.cloudfront.net (CloudFront)
x-amz-cf-pop: EWR53-P1
age: 77184
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Fri, 14 Feb 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Sat, 17 Aug 2024 05:02:08 GMT
server: AmazonS3
etag: W/"7471bf614fc6660f43526b8d6e8c2b63"
vary: Accept-Encoding, Origin
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: zKGFfewvNaelNIpwHwYa_9KtvmTvUc9mNDU3V11VTeLbXUzXXS0D7Q==

GET
H2 200 IntroPopup-a01e8e94.css
substackcdn.com/bundle/assets/ 5 KB
2 KB 186ms
171ms Stylesheet
text/css 2600:9000:2209:c00:4:b4b9:d3c0:93a1
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://substackcdn.com/bundle/assets/IntroPopup-a01e8e94.css
Requested by: Host: blog.backendengineering.io
URL: https://blog.backendengineering.io/
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2209:c00:4:b4b9:d3c0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: a01e8e94af18be8a9128073c65b6349e364faae24e2c26ccd3ae31b514aea717

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

date: Mon, 19 Aug 2024 23:21:17 GMT
content-encoding: gzip
via: 1.1 0812978283e8debc2d404f4a7b32d866.cloudfront.net (CloudFront)
x-amz-cf-pop: EWR53-P1
age: 22104
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
alt-svc: h3=":443"; ma=86400
x-amz-expiration: expiry-date="Fri, 14 Feb 2025 00:00:00 GMT", rule-id="StaticAssetIntelligentTiering"
last-modified: Sat, 17 Aug 2024 05:02:08 GMT
server: AmazonS3
etag: W/"9ce42f2e979401cfd9cb3eb5a34201cc"
vary: Accept-Encoding, Origin
content-type: text/css
cache-control: public, max-age=31536000, immutable
x-amz-cf-id: 0sldf79h_fCIGygB5AzMNRG9HMbc5B_21ju0x2KqMNqXtQ32Yg7LEg==

GET
H2 200 free_email_form-a84f1e43.css
substackcdn.com/bundle/assets/ 3 KB
1 KB 195ms
180ms Stylesheet
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Show headers Download Go to

Full URL

https://googleads.g.doubleclick.net/pagead/viewthroughconversion/316245675/?random=1724131784649&cv=11&fst=1724131784649&bg=ffffff&guid=ON&async=1&gtm=45be48e0v887153041za200&gcd=13l3l3l3l1l1&dma=0&tag_exp=0&u_w=1600&u_h=1200&url=https%3A%2F%2Fblog.backendengineering.io%2F&hn=www.googleadservices.com&frm=0&tiba=Backend%20Engineering%20School%20%7C%20Suchait%20Gaurav%20%7C%20Substack&npa=0&pscdl=noapi&auid=1202156770.1724131785&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&fdr=QA&data=event%3Dgtag.config&rfmt=3&fmt=4

Requested by

Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=AW-316245675&l=localGaDataLayer

Protocol

Security

QUIC, , AES_128_GCM

Server

142.250.80.2 Plainview, United States, ASN15169 (GOOGLE, US),

Reverse DNS

lga34s33-in-f2.1e100.net

Software

cafe /

Resource Hash

6e2238475b050861ca59bc37a803074c287991f7ba76e79061ffb143b5dd81c2

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 20 Aug 2024 05:29:45 GMT
content-encoding: br
x-content-type-options: nosniff
server: cafe
content-type: text/javascript; charset=UTF-8
p3p: policyref="https://googleads.g.doubleclick.net/pagead/gcn_p3p_.xml", CP="CURa ADMa DEVa TAIo PSAo PSDo OUR IND UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"
cache-control: no-cache, must-revalidate
cross-origin-resource-policy: cross-origin
content-disposition: attachment; filename="f.txt"
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 1381
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H3 200 /
www.google.com/pagead/1p-user-list/316245675/ 42 B
64 B 418ms
152ms Image
image/gif 142.250.80.100
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.com/pagead/1p-user-list/316245675/?random=1724131784649&cv=11&fst=1724130000000&bg=ffffff&guid=ON&async=1&gtm=45be48e0v887153041za200&gcd=13l3l3l3l1l1&dma=0&tag_exp=0&u_w=1600&u_h=1200&url=https%3A%2F%2Fblog.backendengineering.io%2F&hn=www.googleadservices.com&frm=0&tiba=Backend%20Engineering%20School%20%7C%20Suchait%20Gaurav%20%7C%20Substack&npa=0&pscdl=noapi&auid=1202156770.1724131785&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&fdr=QA&data=event%3Dgtag.config&rfmt=3&fmt=3&is_vtc=1&cid=CAQSGwDpaXnfQD7oBrAHpXdS1CRB8K2upD_Xp9XTAg&random=609315592&rmt_tld=0&ipr=y

Protocol

Security

QUIC, , AES_128_GCM

Server

142.250.80.100 Plainview, United States, ASN15169 (GOOGLE, US),

Reverse DNS

lga34s36-in-f4.1e100.net

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'; object-src 'none'
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 20 Aug 2024 05:29:45 GMT
content-security-policy: script-src 'none'; object-src 'none'
x-content-type-options: nosniff
server: cafe
content-type: image/gif
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

POST
H2 204 collect Show response
www.google-analytics.com/g/ 0
54 B 148ms
147ms Fetch
text/plain 2607:f8b0:4006:80e::200e
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://www.google-analytics.com/g/collect?v=2&tid=G-PKZB685R9F&gtm=45je48e0v9193378524za200&_p=1724131781891&gcd=13l3l3l3l1l1&npa=0&dma=0&tag_exp=0&cid=526213717.1724131782&ul=en-us&sr=1600x1200&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&are=1&frm=0&pscdl=noapi&_s=2&sid=1724131781&sct=1&seg=1&dl=https%3A%2F%2Fblog.backendengineering.io%2F&dt=Backend%20Engineering%20School%20%7C%20Suchait%20Gaurav%20%7C%20Substack&en=page_view&_ee=1&_et=10&tfd=6824
Requested by: Host: www.datadoghq-browser-agent.com
URL: https://www.datadoghq-browser-agent.com/us1/v5/datadog-rum.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2607:f8b0:4006:80e::200e , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software: Golfe2 /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer: https://blog.backendengineering.io/
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 20 Aug 2024 05:29:47 GMT
server: Golfe2
content-type: text/plain
access-control-allow-origin: https://blog.backendengineering.io
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

Verdicts & Comments Add Verdict or Comment

21 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.

17 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

Domain/Path	Expires	Name / Value
.blog.backendengineering.io/	1970-01-21 07:41:07	Name: ab_experiment_sampled Value: %22false%22
.blog.backendengineering.io/	1970-01-21 07:41:07	Name: ab_testing_id Value: %22d275922e-6712-48fa-992b-f019a0dadb12%22
.blog.backendengineering.io/	1970-01-20 22:55:33	Name: __cf_bm Value: sFoMh0dk3y8wND1RIuKTm9ipBnkTlGx5SrqLoJI4LBE-1724131780-1.0.1.1-lNo3TA7XoEVk0In2fWFjCPtAKT.ULYUEMdk6EPv_QRt3hDDY4F31BGcoJFJsw5p6lyoxR9KNXWqpJTcy4PO2kA
.backendengineering.io/	1970-01-21 08:31:31	Name: _ga Value: GA1.1.526213717.1724131782
.backendengineering.io/	1970-01-21 08:31:31	Name: _ga_PKZB685R9F Value: GS1.1.1724131781.1.1.1724131781.0.0.0
blog.backendengineering.io/	1970-01-21 07:41:07	Name: ajs_anonymous_id Value: %226279acff-b486-4fef-a710-3c31a976084e%22
.blog.backendengineering.io/	1970-01-21 07:41:07	Name: ajs_anonymous_id Value: %226279acff-b486-4fef-a710-3c31a976084e%22
.substack.com/	1970-01-21 01:05:07	Name: cookie_storage_key Value: c01b7bab-4ff2-4e48-9161-5ac9fc51fd9e
.blog.backendengineering.io/	1970-01-20 22:55:33	Name: visit_id Value: %7B%22id%22%3A%222f83f176-ff75-4220-9e6c-791e422e5b52%22%2C%22timestamp%22%3A%222024-08-20T05%3A29%3A42.213Z%22%7D
.blog.backendengineering.io/	1970-01-21 01:05:07	Name: cookie_storage_key Value: 9bb47209-e42e-464b-85a5-95a8e8f44a1d
substack.com/	1970-01-20 23:05:36	Name: AWSALBTGCORS Value: NRWiEBO3YOcvFluZ7UaTTkInoz80WzCOwmU1cG2JA2ssR9hbqSHGhbo5Q75OgiJT596y5sktx8zQr4NMTiPu6yVGvXdWdjtxjf5qMpEUy5QG2PahjromTw4gG01iw9e3rM+UN7r9HzVgMBoQXN/jHTIuO6HmIHPdwbPY7hwdIyc8
.substack.com/	1970-01-20 22:55:33	Name: __cf_bm Value: fCaB_MzJM6JO8oL.MmkyftPulwrNrvkVMjL9oc1e8i0-1724131783-1.0.1.1-wu44g7lp3lk6q0zbXTcSvx4za0NhD0WED2kS6G_Ms8ncOMCNNNgt7g7LiusKJpUU3u2WQFfKxSJwozIMwkCaGQ
blog.backendengineering.io/	1970-01-20 23:05:36	Name: AWSALBTG Value: 9bJymieJAUAn4dJNInk5dnFW8T+uylRYargu++s9pWUQ77bEPJ2VJeP81KfPIbuHg9++r6D7YKPLrSmUYEVdZ1aUa7XhMfIK9Nycvq68aZL89BLzATLS2cpWnOxCqDDPj4fBGlAiWjLgODA4mWae3yMRewK0msDUHivaSiiktD26
blog.backendengineering.io/	1970-01-20 23:05:36	Name: AWSALBTGCORS Value: 9bJymieJAUAn4dJNInk5dnFW8T+uylRYargu++s9pWUQ77bEPJ2VJeP81KfPIbuHg9++r6D7YKPLrSmUYEVdZ1aUa7XhMfIK9Nycvq68aZL89BLzATLS2cpWnOxCqDDPj4fBGlAiWjLgODA4mWae3yMRewK0msDUHivaSiiktD26
.backendengineering.io/	1970-01-21 01:05:07	Name: _gcl_au Value: 1.1.1202156770.1724131785
.doubleclick.net/	1970-01-20 22:55:32	Name: test_cookie Value: CheckForPermission
blog.backendengineering.io/	1970-01-20 22:55:32	Name: _dd_s Value: rum=0&expire=1724132681795

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
Strict-Transport-Security	max-age=31536000
X-Frame-Options	sameorigin

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.

blog.backendengineering.io
cloudflareinsights.com
fonts.gstatic.com
googleads.g.doubleclick.net
js.sentry-cdn.com
static.cloudflareinsights.com
substack.com
substackcdn.com
www.datadoghq-browser-agent.com
www.google-analytics.com
www.google.com
www.googletagmanager.com
104.18.11.223
108.138.124.46
142.250.80.100
142.250.80.2
2600:9000:2209:c00:4:b4b9:d3c0:93a1
2606:4700::6810:4f49
2606:4700::6812:bdf
2607:f8b0:4006:80e::200e
2607:f8b0:4006:81d::2003
2607:f8b0:4006:820::2008
2a04:4e42:200::729
52.85.61.34
011ef325ac2e0437167a7d2d1e3827c842f2c762d5e600dd5142f6c169f03465
019b32460bec096d4be173a4c5b2fca6285513a011cb23e15fd014250302f568
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02d3145ca6dccd59d4106b29d05d65502c4e795e9fa67f29429912d17d90e19e
02e2d001bf7e70fcdc13487ee2a0cdd8a05e99a4f7c98532f6794635f99ec157
03468b3d4b942a205bfd4ff99b99a9469273f98934a07c6373e373482ef08245
0357d88e4e2736d8a026a9fedc15f0075049e631400a88445b090e948ab162bc
03848dd3192b605c97f451c8df36cc75f49cba8e5764fd251c8582972f7e4492
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08ea4a7c85ecb6bbe2353c0c59c78b2731b449f7e8148012fd1c8e8028e48739
09ffe000bd8b3e7bda25feaabd703a274e827f8ce5754e59c634292277f705fd
0af5756f06b6e28f8b0750f519fc2d24152e7c59cd2d15ef9628cd4648b591a8
0b0591feedcac12e755c719ca1a0861e913227bdc48fb4cd94a316d22f0514f0
0b1f79bdf81f08db2fb07bc57cb1cc06617d9aebc0df152292a734a9ad233712
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0c77e20351e55a51a63f1445edbb4a516ecce70374981fc1a0356577cdd0d7bc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1cb2710f2582313eafb3d21754b66c25377440bac8a550b275897481a5bfe5c0
1d945fd19fe9164cd7222ff7d2c9807797d8dcf1810227c8c4fe68f554f6807f
1e64850ced45e27814d4b889ec25435c40eb1bc0437855996411ed68096b1fb5
1f1ddc4304f542dbbbd0ba30d1714939b1040072b37e156ecda60e4d9367bbfe
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2061615b3a5f6e50634ed00057a895a67d5b7d2e66eb2311ed5db3a04a573e07
21e4510c8dda997333682d6a67bab2e7e1fe0a17c70726fd358a69291bef04a8
23baf127075bfb38a40a151a58ab11ee6fa393b0ca739af19751eafe0ae7809e
24228c5adf4e282d3a61c3406c476f10a8aa39c95d842acc4337a82daa17d9f8
25be5208d218cd6a23532facd4a808439a10ff11c50579bbaa29ccbe9f0cc1a0
26824100d5a7ef206387b71e50c6df6a847e571267761e9517de8fb10dc1fdd3
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31e9f6787747d62c6aeaaff526f61dc8032f05a1fb6b5f6f506830fc336497ed
334f92e9d2e33f99774c678f73ef3e2827c94b6b1c0a77da5823e80e8aa2b69f
33e3ad5d31f0ea1a0e3c26a2a2625d22cf5a9134cece90c990aab33e18aec461
34ae1d2d6528543794285b909842b457b9a7a051ab65b460547532d2342ec184
352793dc40c7ac86781582041b16d2e1d229db51b223612e72942bf0093334d0
35fe4494ec2a2e34c51510aa602f6f344f51d3503ad47d2e01652f4232a1b69c
36aa150d7b1cbbd0b5e7b469edd32b2fa05a90db73d4b8e661249364dcdc2b11
36bf0c01a4144ab426e1bd98209b81f9f3b90ae197535d490e905ce6dec28351
36c7035fb0b22cbeeff9b8f6a91f0c0c565f1809f1dd91ea922770507f553c96
36d281147183593ca012791b9ced3d85d229200795b660b0952e51ddadd6b893
372dbcc94110b93a70ab9c8388674cd8c843ea08c8dad102e807364e1a8f5ed6
37c35be3ec9deb4a8d437189150230bfb085022b7fd792dd560dfc322849f7b9
3811bdd5ffd16bfe7808c5c9e0f1a4f23d6a170158ac4064cc9890643dfc25fd
3924979606769623c407c53950eb1f90a31308c41576f5a2d7e7da7317e0f96a
3a645a7b36c24eaed37d422599b18d79dec60cd7f1850e96e5fc9907ba752ce5
3aee957a552e3d744ca92df0f11cf40fcbac707e83464823449e5d4bf565c396
3c675abd711de71e812a795f51ed1232358a79595cfa9fb419fbb3f419ee1b63
3ca739338a12e929b9998db4594b7acd253574421ceb92d9a3e065edd9468a17
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3dc8fdd28aed20ec1e0e09362eede73c87c9ec6b0b7e0d1c4a6584118cdd3013
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44ead5a101144c5b01b4fefd86858c33ee00057131c50a628d557431ca562cd6
44eaf5cb8fee8af246ed0b784452f55d6adef188a79451c295ead969751673f3
45dd1ac72b1bed867da37eed5aa09f01a312d20f2b28e9e8acd2762262b5a947
4676a27b18130ce3f3a690bc87378f7ba54c230695e6ad62a5c966df0a069cd0
4695a875c587cee6fbd53592e6357cf106af20895e462c26526fd95eef8360b8
478eee9ac68ef242aeda59b8b37b388003eb3eac12af90b8c38fa65d3a34f3a9
4831649247af3140d33d8dd9b3073331c34267b4863ab2266edf38760023cf00
48479cc38daf50ca13b8f2b22fd3819eb61246bd4e0789728af70437fa41d1e3
4ae658dfb26015e39c05a81bafbf9c8137972fbd5a5b2cf7706ee63d431d7ae0
4afdb5a2c5fabfc2252b5c3105a0d0008d37475043c6a40ee591295c4fbedbee
4bc7c7a51daf03474e5f4e55dbfa74aeb0aec4628435a9a766eef88bfc0168e9
4dcba97d97ad23ea12d4af04c7a4175e5019ef254db5a588dd4d10e16af439ee
4dd2cbdc055862aee7fa36fcf7e2d7260e6746a3587b24d9c259324cd32af62a
4ddc37d8c6c1bba21d30195ae68460b80ce908dad8474eb62648e8c58a5b3089
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blog.backendengineering.io Open in urlscan Pro 104.18.11.223 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Detected technologies

Page Statistics

297 Requests

100 %HTTPS

58 %IPv6

11 Domains

12 Subdomains

12 IPs

2 Countries

1782 kBTransfer

4608 kBSize

17 Cookies

18 Outgoing links

Redirected requests

297 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

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297
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100 %
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58 %
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11
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12
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12
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2
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1782 kB
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4608 kB
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297 HTTP transactions
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