github · importer

GitHub uses 5 prefixes for importer.

Name: GitHub importer IP ranges
Creator: GitHub

Last updated 5 Nov 2026 from GitHub’s own list

Short answer

importer lists the addresses the GitHub Importer uses to fetch repositories from elsewhere.

IPv4 prefixes	5
IPv6 prefixes	0
Regions in the first 100	—
Fetched by peekip	5 Nov 2026

Prefixes

Prefix	Region / location	Service
172.184.222.112/28	—	importer
20.51.87.64/28	—	importer
52.0.228.224/32	—	importer
52.22.155.48/32	—	importer
52.23.85.212/32	—	importer

What changed

No prefixes added or removed since we started tracking this list. Changes appear here the day after the provider publishes them.

Allowlist formats

nginx (first 5 prefixes)

allow 172.184.222.112/28;
allow 20.51.87.64/28;
allow 52.0.228.224/32;
allow 52.22.155.48/32;
allow 52.23.85.212/32;
deny all;

iptables (first 5 prefixes)

iptables -A INPUT -s 172.184.222.112/28 -j ACCEPT
iptables -A INPUT -s 20.51.87.64/28 -j ACCEPT
iptables -A INPUT -s 52.0.228.224/32 -j ACCEPT
iptables -A INPUT -s 52.22.155.48/32 -j ACCEPT
iptables -A INPUT -s 52.23.85.212/32 -j ACCEPT

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

Sources

GitHub: published IP ranges · checked 5 Nov 2026
GitHub documentation