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azure · AzureSignalR

Microsoft Azure uses 199 prefixes for AzureSignalR.

Last updated 3 Nov 2026 from Microsoft Azure’s own list (file dated 2026-10-26 (change 424))

Short answer

Microsoft Azure lists these prefixes under “AzureSignalR”. 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.

IPv4 prefixes130
IPv6 prefixes69
Regions in the first 100—
Fetched by peekip3 Nov 2026

Prefixes

PrefixRegion / locationService
102.133.126.96/27—AzureSignalR
102.37.160.32/27—AzureSignalR
13.66.145.0/26—AzureSignalR
13.67.15.64/27—AzureSignalR
13.70.74.224/27—AzureSignalR
13.73.244.64/27—AzureSignalR
13.78.109.224/27—AzureSignalR
13.89.175.128/26—AzureSignalR
135.225.177.32/27—AzureSignalR
135.233.94.160/27—AzureSignalR
135.233.94.192/26—AzureSignalR
135.235.2.192/27—AzureSignalR
145.191.180.128/26—AzureSignalR
172.129.103.0/26—AzureSignalR
172.184.37.192/27—AzureSignalR
172.184.38.0/25—AzureSignalR
172.188.178.64/27—AzureSignalR
172.204.249.64/26—AzureSignalR
172.212.135.0/26—AzureSignalR
172.215.132.0/25—AzureSignalR
172.215.76.128/27—AzureSignalR
191.238.72.96/27—AzureSignalR
20.150.174.160/27—AzureSignalR
20.150.244.160/27—AzureSignalR
20.17.88.0/26—AzureSignalR
20.174.231.128/27—AzureSignalR
20.189.170.0/24—AzureSignalR
20.189.229.224/27—AzureSignalR
20.191.166.64/27—AzureSignalR
20.192.157.0/25—AzureSignalR
20.192.34.0/27—AzureSignalR
20.192.44.64/27—AzureSignalR
20.192.55.192/27—AzureSignalR
20.193.199.160/27—AzureSignalR
20.193.205.224/27—AzureSignalR
20.194.73.192/27—AzureSignalR
20.195.65.192/27—AzureSignalR
20.195.72.192/27—AzureSignalR
20.195.84.0/25—AzureSignalR
20.206.5.192/26—AzureSignalR
20.21.55.0/25—AzureSignalR
20.211.225.0/26—AzureSignalR
20.215.74.192/26—AzureSignalR
20.217.161.192/26—AzureSignalR
20.38.132.96/27—AzureSignalR
20.38.143.192/27—AzureSignalR
20.40.229.0/27—AzureSignalR
20.44.10.128/26—AzureSignalR
20.46.11.96/27—AzureSignalR
20.48.196.192/27—AzureSignalR
Showing 50 of 199 prefixes All prefixes (CSV)

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 102.133.126.96/27;
allow 102.37.160.32/27;
allow 13.66.145.0/26;
allow 13.67.15.64/27;
allow 13.70.74.224/27;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 102.133.126.96/27 -j ACCEPT
iptables -A INPUT -s 102.37.160.32/27 -j ACCEPT
iptables -A INPUT -s 13.66.145.0/26 -j ACCEPT
iptables -A INPUT -s 13.67.15.64/27 -j ACCEPT
iptables -A INPUT -s 13.70.74.224/27 -j ACCEPT

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

Sources

  1. Microsoft Azure: published IP ranges · checked 3 Nov 2026
  2. Microsoft Azure documentation