`resources.github.com`

DNSSEC	⚠️ Not signed
A	2606:50c0:8000::154^{🇺🇸 Fastly2606:50c0:8000::/48 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8001::154^{🇺🇸 Fastly2606:50c0:8001::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8002::154^{🇺🇸 Fastly2606:50c0:8002::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8003::154^{🇺🇸 Fastly2606:50c0:8003::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	185.199.108.133^{🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24}
A	185.199.109.133^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
A	185.199.110.133^{🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24}
A	185.199.111.133^{🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24}
MX	`s88570519.m.en25.com` ⭐
		A	147.154.53.126^{🇺🇸 ORACLE-OCI-31898147.154.48.0/20}
TXT	`v=spf1 include:_netblocks.eloqua.com -all`

`github.com`

	DNSSEC	⚠️ Not signed
	A	140.82.113.3^{🇺🇸 GITHUB140.82.113.0/24 GitHub}
	NS	`dns1.p08.nsone.net` ⭐
	NS	`dns2.p08.nsone.net`
	NS	`dns3.p08.nsone.net`
	NS	`dns4.p08.nsone.net`
	NS	`ns-1283.awsdns-32.org`
	NS	`ns-1707.awsdns-21.co.uk`
	NS	`ns-421.awsdns-52.com`
	NS	`ns-520.awsdns-01.net`
	MX	`github-com.mail.protection.outlook.com` ⭐
	TXT	`00Dd0000000hHE0=1TBKg000000TN2r`
	TXT	`MS=6BF03E6AF5CB689E315FB6199603BABF2C88D805`
	TXT	`MS=ms44452932`
	TXT	`MS=ms58704441`
	TXT	`TAILSCALE-xOzoDvFUzZr5YYVCQFuD`
	TXT	`adobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd...`
	TXT	`anthropic-domain-verification-4az7qn=if8YWuRRqwLycGJDooumzHtxm`
	TXT	`apple-domain-verification=RyQhdzTl6Z6x8ZP4`
	TXT	`atlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/i...`
	TXT	`calendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP`
	TXT	`docusign=087098e3-3d46-47b7-9b4e-8a23028154cd`
	TXT	`facebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx50`
	TXT	`google-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpks`
	TXT	`google-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3o`
	TXT	`jamf-site-verification=XtaPNIYghF_e_xRDI8CjgQ`
	TXT	`krisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WE`
	TXT	`loom-site-verification=f3787154f1154b7880e720a511ea664d`
	TXT	`miro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa9`
	TXT	`shopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72o`
	TXT	`stripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4...`
	TXT	`v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblo...`
	SOA	`dns1.p08.nsone.net`hostmaster@nsone.net serial=1656468023

WOT: SAFE (64/100)
rank #10 globally
rank #10 in the tld

github.com

github.com is the primary domain of GitHub, a code hosting platform operated by Microsoft.

Key facts

Owner / operator: Microsoft (via GitHub, Inc.)
TLD:.com— gTLD
Primary purpose: hosting service for git repositories and collaborative software development
Status: active

History

Year	Event
2008	GitHub launched, domain registered for the service
2012	GitHub announced reaching 3 million repositories
2018	Microsoft acquired GitHub for $7.5 billion (acquisition completed)

Related domains

github.io– GitHub Pages static site hosting

🔒 HSTS Preload (+subdomains)
Semrush Rank:#148 Keywords:7,571,859 Traffic:15,919,465/mo
WOT: SAFE (79/100)
📈 Tranco rank: #31

GitHub is the world's largest source code hosting platform and developer community, founded in 2008 and acquired by Microsoft in 2018 for $7.5 billion. With over 100 million developers and 400 million repositories, GitHub has become the central hub for open-source development and enterprise software collaboration.

The platform pioneered social coding features like pull requests, issues, and forking that have become industry standards. GitHub hosts the source code for countless major projects including Linux, React, TensorFlow, and VS Code. The company also provides GitHub Actions for CI/CD, GitHub Pages for static hosting, Copilot for AI-assisted coding, and comprehensive security scanning.

GitHub's infrastructure runs on Microsoft Azure, having migrated from its original Rackspace-based setup. The platform uses a globally distributed architecture with multiple data centers for redundancy. GitHub experienced a famous 2018 DDoS attack that peaked at 1.35 Tbps, the largest recorded at that time, which they mitigated using Akamai Prolexic.

DNS for github.com is managed through multiple providers for resilience, with authoritative nameservers including dns1-4.p08.nsone.net (NS1). The site uses advanced DNS configurations including DNSSEC and CAA records for certificate authority authorization. GitHub's global CDN delivers assets from edge locations worldwide for optimal performance.

Subdomains

mail01.resources.github.com

Same first word

resources.org.au

resources.cl

resources.com.br

resources.in

resources.guide

resources.awsapps.com

resources.kz

resources.technology

resources.s3-website-us-east-1.amazonaws.com

resources.eu.com

resources.s3.amazonaws.com

resources.ai

resources.ltd

resources.qld.gov.au

resources.biz

resources.s3-us-west-2.amazonaws.com

resources.group

resources.ch

resources.guru

resources.nyc

resources.nl

resources.today

resources.email

resources.it

resources.citic

resources.neustar

resources.com.kw

resources.de

resources.hk

resources.live

resources.tv

resources.earth

resources.es

resources.eu

resources.hu

resources.zone

resources.pm

resources.org

resources.training

resources.ru

resources.net

resources.limited

resources.la

resources.pro

resources.sa

resources.barclays

resources.dk

resources.com.au

resources.ro

resources.com

resources.com.mx

resources.pl

resources.directory

resources.se

resources.us

resources.no

resources.life

resources.gov.au

Similar names

DNS History

17 records (9 active, 8 former)

●MXs88570519.m.en25.com2017-07-19 → 2026-07-04 · 5 obs

● 2017-07-19 13:08:42
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

○A151.101.0.1332017-07-19 → 2017-07-19 · 3 obs

● 2017-07-19 13:08:42
○ 2018-09-08 21:50:44
○ 2026-07-04 20:55:30

○A151.101.128.1332017-07-19 → 2017-07-19 · 3 obs

● 2017-07-19 13:08:42
○ 2018-09-08 21:50:44
○ 2026-07-04 20:55:30

○A151.101.192.1332017-07-19 → 2017-07-19 · 3 obs

● 2017-07-19 13:08:42
○ 2018-09-08 21:50:44
○ 2026-07-04 20:55:30

○A151.101.64.1332017-07-19 → 2017-07-19 · 3 obs

● 2017-07-19 13:08:42
○ 2018-09-08 21:50:44
○ 2026-07-04 20:55:30

●A185.199.108.1332026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

○A185.199.108.1532018-09-08 → 2018-09-08 · 4 obs

○ 2017-07-19 13:08:42
● 2018-09-08 21:50:44
○ 2026-02-21 00:40:18
○ 2026-07-04 20:55:30

●A185.199.109.1332026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

○A185.199.109.1532018-09-08 → 2018-09-08 · 4 obs

○ 2017-07-19 13:08:42
● 2018-09-08 21:50:44
○ 2026-02-21 00:40:18
○ 2026-07-04 20:55:30

●A185.199.110.1332026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

○A185.199.110.1532018-09-08 → 2018-09-08 · 4 obs

○ 2017-07-19 13:08:42
● 2018-09-08 21:50:44
○ 2026-02-21 00:40:18
○ 2026-07-04 20:55:30

●A185.199.111.1332026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

○A185.199.111.1532018-09-08 → 2018-09-08 · 4 obs

○ 2017-07-19 13:08:42
● 2018-09-08 21:50:44
○ 2026-02-21 00:40:18
○ 2026-07-04 20:55:30

●A2606:50c0:8000::1542026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

●A2606:50c0:8001::1542026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

●A2606:50c0:8002::1542026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

●A2606:50c0:8003::1542026-02-21 → 2026-07-04 · 6 obs

○ 2018-09-08 21:50:44
● 2026-02-21 00:40:18
● 2026-06-12 11:45:50
○ 2026-06-12 12:35:24
● 2026-06-12 14:05:04
● 2026-07-04 20:55:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net...	-
github.com	ns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org...	2 records

✅ Authoritative Response

Server:205.251.194.8

NS records: ns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org, dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for github.com (unsigned zone)

⏱️ Timing

Total: 1355ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`185.199.108.133, 185.199.109.133...`
AAAA	4	`2606:50c0:8002::154, 2606:50c0:8000::154...`
MX	1	`s88570519.m.en25.com (pri: 10)`
TXT	1	`v=spf1 include:_netblocks.eloqua.com -al`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-421.awsdns-52.com, ns-421.awsdns-52.com)

Analysis

Hierarchy

resources.github.com serves as the parent of mail01.resources.github.com.

IP Addresses

resources.github.com points to 8 IP addresses, including 185.199.108.133, 185.199.109.133 and 185.199.110.133, plus 5 other.

133objects.githubusercontent.com, 160.10avatars1.githubusercontent.com, 104.128avatars2.githubusercontent.com plus two other host names have IP numbers in common with resources.github.com.

Mail Servers

resources.github.com uses one mail server — s88570519.m.en25.com.

s88570519.m.en25.com carries a single IP number, which is 147.154.53.126.

resources.github.com - robtex.com