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github · web

GitHub uses 41 prefixes for web.

Last updated 6 Nov 2026 from GitHub’s own list

Short answer

web lists the addresses of github.com itself.

IPv4 prefixes39
IPv6 prefixes2
Regions in the first 100—
Fetched by peekip6 Nov 2026

Prefixes

PrefixRegion / locationService
140.82.112.0/20—web
143.55.64.0/20—web
172.182.252.130/32—web
172.182.252.133/32—web
185.199.108.0/22—web
192.30.252.0/22—web
20.175.192.147/32—web
20.199.39.232/32—web
20.200.245.244/32—web
20.200.245.247/32—web
20.201.28.151/32—web
20.205.243.161/32—web
20.205.243.166/32—web
20.207.73.81/32—web
20.207.73.82/32—web
20.217.135.1/32—web
20.217.135.5/32—web
20.233.83.145/32—web
20.233.83.148/32—web
20.250.119.67/32—web
20.26.156.213/32—web
20.26.156.215/32—web
20.27.177.113/32—web
20.27.177.119/32—web
20.29.134.22/32—web
20.29.134.23/32—web
20.87.245.0/32—web
20.87.245.2/32—web
4.208.26.193/32—web
4.208.26.197/32—web
4.225.11.194/32—web
4.225.11.199/32—web
4.228.31.144/32—web
4.228.31.150/32—web
4.237.22.36/32—web
4.237.22.38/32—web
4.249.131.164/32—web
48.202.248.40/32—web
48.204.201.5/32—web
2606:50c0::/32—web
2a0a:a440::/29—web
Showing 41 of 41 prefixes All prefixes (CSV)

What changed

  • 21 Oct 2026
    + 20.250.119.67/32

Allowlist formats

nginx (first 5 prefixes)
allow 140.82.112.0/20;
allow 143.55.64.0/20;
allow 172.182.252.130/32;
allow 172.182.252.133/32;
allow 185.199.108.0/22;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 140.82.112.0/20 -j ACCEPT
iptables -A INPUT -s 143.55.64.0/20 -j ACCEPT
iptables -A INPUT -s 172.182.252.130/32 -j ACCEPT
iptables -A INPUT -s 172.182.252.133/32 -j ACCEPT
iptables -A INPUT -s 185.199.108.0/22 -j ACCEPT

Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.

Sources

  1. GitHub: published IP ranges · checked 6 Nov 2026
  2. GitHub documentation