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azure · AzureSpringCloud

Microsoft Azure uses 267 prefixes for AzureSpringCloud.

Last updated 4 Nov 2026 from Microsoft Azure’s own list (file dated 2026-11-02 (change 425))

Short answer

Microsoft Azure lists these prefixes under “AzureSpringCloud”. 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 prefixes186
IPv6 prefixes81
Regions in the first 100—
Fetched by peekip4 Nov 2026

Prefixes

PrefixRegion / locationService
102.133.57.176/29—AzureSpringCloud
102.133.58.0/25—AzureSpringCloud
102.133.58.128/26—AzureSpringCloud
102.37.164.0/24—AzureSpringCloud
13.73.249.144/29—AzureSpringCloud
13.73.249.192/26—AzureSpringCloud
13.73.252.0/25—AzureSpringCloud
134.138.69.0/24—AzureSpringCloud
158.23.99.0/24—AzureSpringCloud
172.129.77.0/24—AzureSpringCloud
172.194.69.0/24—AzureSpringCloud
172.198.85.0/24—AzureSpringCloud
172.204.155.0/24—AzureSpringCloud
191.233.10.176/29—AzureSpringCloud
191.233.10.192/26—AzureSpringCloud
191.233.11.0/25—AzureSpringCloud
191.234.136.32/29—AzureSpringCloud
191.235.228.128/25—AzureSpringCloud
191.235.228.64/26—AzureSpringCloud
20.113.253.0/24—AzureSpringCloud
20.150.164.192/26—AzureSpringCloud
20.150.165.0/25—AzureSpringCloud
20.150.165.128/29—AzureSpringCloud
20.150.240.0/24—AzureSpringCloud
20.17.115.0/24—AzureSpringCloud
20.17.50.0/24—AzureSpringCloud
20.175.3.0/24—AzureSpringCloud
20.187.194.0/25—AzureSpringCloud
20.187.194.128/26—AzureSpringCloud
20.187.194.192/29—AzureSpringCloud
20.192.161.136/29—AzureSpringCloud
20.192.165.0/25—AzureSpringCloud
20.192.165.128/26—AzureSpringCloud
20.192.228.240/29—AzureSpringCloud
20.192.229.128/25—AzureSpringCloud
20.192.229.64/26—AzureSpringCloud
20.192.49.0/24—AzureSpringCloud
20.193.193.0/24—AzureSpringCloud
20.194.76.0/24—AzureSpringCloud
20.195.79.0/24—AzureSpringCloud
20.208.0.0/24—AzureSpringCloud
20.21.35.0/24—AzureSpringCloud
20.210.147.0/24—AzureSpringCloud
20.215.2.0/24—AzureSpringCloud
20.217.250.0/24—AzureSpringCloud
20.217.42.0/24—AzureSpringCloud
20.218.187.0/24—AzureSpringCloud
20.36.121.248/29—AzureSpringCloud
20.36.122.128/25—AzureSpringCloud
20.36.122.64/26—AzureSpringCloud
Showing 50 of 267 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 102.133.57.176/29;
allow 102.133.58.0/25;
allow 102.133.58.128/26;
allow 102.37.164.0/24;
allow 13.73.249.144/29;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 102.133.57.176/29 -j ACCEPT
iptables -A INPUT -s 102.133.58.0/25 -j ACCEPT
iptables -A INPUT -s 102.133.58.128/26 -j ACCEPT
iptables -A INPUT -s 102.37.164.0/24 -j ACCEPT
iptables -A INPUT -s 13.73.249.144/29 -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 4 Nov 2026
  2. Microsoft Azure documentation