Microsoft Azure uses 1 prefixes for Grafana.
Short answer
Microsoft Azure lists these prefixes under “Grafana”. Microsoft publishes Azure’s ranges weekly as Service Tags: named groups such as AzureCloud, Storage, Sql or AzureFrontDoor.Frontend, each a list of prefixes. We import the global (non-regional) tags.
Prefixes
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 1 prefixes)
allow 40.81.96.212/32; deny all;
iptables (first 1 prefixes)
iptables -A INPUT -s 40.81.96.212/32 -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 3 Nov 2026
- Microsoft Azure documentation