Microsoft Azure uses 229 prefixes for AzureFrontDoor.Frontend.
Short answer
AzureFrontDoor.Frontend are the edge addresses clients reach Azure Front Door on.
Prefixes
What changed
- 7 Oct 2026
+ 172.192.235.160/30
Allowlist formats
nginx (first 5 prefixes)
allow 102.133.216.80/29; allow 102.133.56.80/29; allow 104.212.67.0/24; allow 104.212.68.0/24; allow 13.105.221.0/24; deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 102.133.216.80/29 -j ACCEPT iptables -A INPUT -s 102.133.56.80/29 -j ACCEPT iptables -A INPUT -s 104.212.67.0/24 -j ACCEPT iptables -A INPUT -s 104.212.68.0/24 -j ACCEPT iptables -A INPUT -s 13.105.221.0/24 -j ACCEPT
Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.
Sources
- Microsoft Azure: published IP ranges · checked 5 Nov 2026
- Microsoft Azure documentation