1.githubusercontent.com - dns.ninja

1.githubusercontent.com

DNSSEC⚠️ Not signed
A185.199.108.133🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24
PTRcdn-185-199-108-133.github.com
A185.199.109.133🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24
A185.199.110.133🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24
A185.199.111.133🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24

githubusercontent.com

DNSSEC⚠️ Not signed
NSns-1411.awsdns-48.org ⭐
NSdns1.p01.nsone.net
NSdns2.p01.nsone.net
NSdns3.p01.nsone.net
NSdns4.p01.nsone.net
NSns-181.awsdns-22.com
NSns-1867.awsdns-41.co.uk
NSns-596.awsdns-10.net
TXTglobalsign-domain-verification=2wiwCKYW7kQ6LJntfIcdi5EG56lUlQIRj_VGJnEEKb
TXTv=spf1 a -all
SOAns-1411.awsdns-48.orgawsdns-hostmaster@amazon.com serial=1
rank #727 globally
rank #416 in the tld

githubusercontent.com

githubusercontent.comis a content-delivery domain operated by GitHub (a Microsoft subsidiary), used exclusively to serve static assets — raw source files, images, release artifacts, and Git LFS objects — from GitHub repositories, keeping user-supplied content isolated from the maingithub.comorigin for security reasons.

Key facts

  • Owner / operator: GitHub, Inc. (subsidiary of Microsoft Corporation)
  • TLD:.com— gTLD
  • Primary purpose: CDN origin for raw repository content, user-uploaded images, release assets, and Git LFS objects hosted on GitHub
  • Status: active

Notable subdomains or services

The domain is not a user-facing hosting service, but several well-known subdomain patterns exist:

  • raw.githubusercontent.com////— serves raw (unrendered) file content directly from any public repository branch or commit
  • avatars.githubusercontent.com— serves user and organisation avatar images
  • camo.githubusercontent.com— GitHub's image-proxy service (rewrites external images in Markdown through this origin)
  • objects.githubusercontent.com— serves Git LFS objects and release binary assets
  • user-images.githubusercontent.com— stores images uploaded by users in issues, pull requests, and comments
  • private-user-images.githubusercontent.com— same as above for private/authenticated contexts

Related domains

  • github.com— main GitHub platform (code hosting, pull requests, Actions, etc.)
  • github.io— GitHub Pages hosting; user sites follow the pattern.github.io
  • githubassets.com— serves GitHub's own UI static assets (JS, CSS, icons)
📈 Tranco rank: #738
githubusercontent.com - Tranco Rank (30d: ↑+19)732735740745750755760761Apr 26May 5May 14May 23Jun 1Jun 2Rank#757#738

Overview

githubusercontent.com is GitHub's content delivery network (CDN) domain used to serve user-generated content and static assets. It separates raw file content from the main github.com domain for security and performance reasons.

Primary Uses

  • raw.githubusercontent.com — Serves raw file content from repositories (source code, configuration files, scripts)
  • avatars.githubusercontent.com — Hosts user profile pictures and organization logos
  • camo.githubusercontent.com — Proxies external images in README files and issues for privacy/security
  • objects.githubusercontent.com — Serves Git LFS (Large File Storage) objects
  • user-images.githubusercontent.com — Hosts images uploaded to issues, comments, and discussions

Technical Infrastructure

DNS Provider: Dual-provider setup with AWS Route 53 and NS1 for redundancy

Nameservers:

  • AWS: ns-181.awsdns-22.com, ns-596.awsdns-10.net, ns-1867.awsdns-41.co.uk, ns-1411.awsdns-48.org
  • NS1: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net

Security: SPF record configured (v=spf1 a -all). DNSSEC is not enabled.

Ownership

Owned and operated by GitHub, Inc., a subsidiary of Microsoft Corporation since 2018. The domain serves billions of requests daily as part of GitHub's infrastructure supporting over 100 million developers worldwide.

Subdomains

avatars.1.githubusercontent.com
0.1.githubusercontent.com

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DNS History

4 records (4 active, 0 former)

A185.199.108.133185.199.109.133185.199.110.133185.199.111.133
●A185.199.108.1332026-02-16 → 2026-06-04 · 2 obs
● 2026-02-16 03:00:22
● 2026-06-04 14:16:46
●A185.199.109.1332026-02-16 → 2026-06-04 · 2 obs
● 2026-02-16 03:00:22
● 2026-06-04 14:16:46
●A185.199.110.1332026-02-16 → 2026-06-04 · 2 obs
● 2026-02-16 03:00:22
● 2026-06-04 14:16:46
●A185.199.111.1332026-02-16 → 2026-06-04 · 2 obs
● 2026-02-16 03:00:22
● 2026-06-04 14:16:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
githubusercontent.comns-181.awsdns-22.com, ns-596.awsdns-10.net, ns-1867.awsdns-41.co.uk, ns-1411.awsdns-48.org...2 records

✅ Authoritative Response

Server:205.251.192.181

NS records: ns-181.awsdns-22.com, ns-596.awsdns-10.net, ns-1867.awsdns-41.co.uk, ns-1411.awsdns-48.org, dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for githubusercontent.com (unsigned zone)

⏱️ Timing

Total: 1418ms | Queries: -

📄 Records

TypeCountSample Data
A4185.199.108.133, 185.199.109.133...

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-181.awsdns-22.com, ns-181.awsdns-22.com)

Analysis

Hierarchy

1.githubusercontent.com is the parent domain of avatars.1.githubusercontent.com and 0.1.githubusercontent.com.

IP Addresses

1.githubusercontent.com resolves to 4 IP numbers: 185.199.108.133, 185.199.109.133, 185.199.110.133 and 185.199.111.133.

Additional host names — 2mv3.githubusercontent.com, 28.116.227.githubusercontent.com, metamask-okta-network-gateway-staging-genapicloud.comraw.githubusercontent.com and two others — share IP numbers with 1.githubusercontent.com.