| Full name | GitHub Inc. |
| ASN | AS36459 |
| Type | Content Provider |
| Country | United States |
| Headquarters | San Francisco, California, US |
| Founded | 2008 |
| Website | github.com |
| Registry | ARIN |
| Total IPs | ~65,000 (IPv4) |
| Upstream | Microsoft (parent company) and Fastly CDN |
| IPv6 | 2a0a:a440::/29 |
| RIR | ARIN |
| Abuse email | abuse@github.com |
| Abuse form | Report abuse → |
AS36459 is GitHub's ASN covering github.com, GitHub Pages, GitHub Actions, and the GitHub API. GitHub was acquired by Microsoft in 2018 and now shares infrastructure with Azure. The 185.199.108.0/22 range is specifically used for GitHub Pages hosting, allowing developers to host websites directly from repositories. GitHub publishes its complete IP range list at api.github.com/meta.
Every time you visit a website, your IP address — and therefore your ISP (GitHub Inc.) — is visible to that site. GitHub Inc. as your ISP can see all unencrypted traffic passing through their network, including the domains you visit. This is standard practice for all ISPs and is typically used for network management, legal compliance, and in some cases targeted advertising.
If your device is assigned an IP in GitHub Inc.’s ranges, websites you visit will identify your connection as coming from GitHub Inc.. To prevent this, a VPN replaces your ISP-assigned IP with the VPN server’s IP, making your traffic appear to come from a different provider entirely.
AS36459 is registered with ARIN — the Regional Internet Registry responsible for IP allocations in North America. The ASN is used to announce IP prefixes to the global BGP routing table, allowing other networks to route traffic to GitHub Inc.’s infrastructure.
GitHub Inc. peers with major transit providers and internet exchanges to ensure global reachability. BGP peering relationships determine how traffic flows between GitHub Inc. and the rest of the internet.
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