Microsoft Azure publishes 54,122 IP ranges.

What it’s for

Use the tags to write firewall or network security group rules for a service instead of hard-coding addresses.

Sub-lists

Sub-lists with a written explanation are described on their own page.

Prefixes

What changed

• 4 Nov 2026

  + 102.133.127.119/32
  + 102.133.127.186/31
  + 102.133.255.104/29
  + 102.133.255.112/30
  + 102.37.64.186/31
  + 102.37.66.104/30
  + 102.37.66.108/31
  + 102.37.66.112/30
  + 102.37.72.206/31
  + 102.37.73.104/30
  + 102.37.73.108/31
  + 102.37.73.112/30
  + 102.37.81.192/27
  + 104.208.151.24/31
  + 104.208.151.28/30
  + 104.208.151.4/30
  + 104.208.18.120/30
  + 104.208.18.124/32
  + 104.208.18.73/32
  + 104.208.18.74/31
  + 104.208.18.76/30
  + 104.208.203.122/31
  + 104.208.203.124/30
  + 104.208.203.208/28
  + 104.208.203.224/29
  + 104.208.207.220/30
  + 104.208.231.146/31
  + 104.211.146.71/32
  + 104.211.147.244/30
  + 104.211.81.30/31
  + 104.214.23.128/29
  + 104.214.23.136/32
  + 104.40.170.240/30
  + 104.40.170.244/31
  + 104.40.170.248/30
  + 104.40.170.70/31
  + 104.45.216.244/32
  + 104.45.217.109/32
  + 104.45.217.173/32
  + 104.45.217.253/32
  + 104.45.218.166/32
  + 104.45.219.11/32
  + 104.46.163.225/32
  + 104.46.163.228/30
  + 104.46.165.32/31
  + 104.46.165.34/32
  + 104.46.165.36/30
  + 107.32.0.0/11
  + 108.143.177.253/32
  + 108.143.177.254/31
  + 108.143.178.32/29
  + 13.117.0.0/16
  + 13.118.0.0/15
  + 13.123.0.0/16
  + 13.240.0.0/14
  + 13.66.149.86/31
  + 13.66.151.200/30
  + 13.66.151.204/32
  + 13.67.15.193/32
  + 13.67.20.250/31
  

Allowlist formats

allow 102.133.0.0/16;
allow 102.133.0.192/32;
allow 102.133.0.199/32;
allow 102.133.0.212/32;
allow 102.133.0.240/28;
deny all;

iptables -A INPUT -s 102.133.0.0/16 -j ACCEPT
iptables -A INPUT -s 102.133.0.192/32 -j ACCEPT
iptables -A INPUT -s 102.133.0.199/32 -j ACCEPT
iptables -A INPUT -s 102.133.0.212/32 -j ACCEPT
iptables -A INPUT -s 102.133.0.240/28 -j ACCEPT

Sources

1. Microsoft Azure: published IP ranges · checked 5 Nov 2026
2. Microsoft Azure documentation