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azure · AzureSphere

Microsoft Azure uses 40 prefixes for AzureSphere.

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 “AzureSphere”. 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 prefixes40
IPv6 prefixes0
Regions in the first 100—
Fetched by peekip4 Nov 2026

Prefixes

PrefixRegion / locationService
104.46.179.248/29—AzureSphere
172.169.153.84/30—AzureSphere
172.169.153.88/29—AzureSphere
172.199.129.32/27—AzureSphere
191.238.72.64/29—AzureSphere
20.166.42.224/28—AzureSphere
20.189.228.128/29—AzureSphere
20.191.165.104/29—AzureSphere
20.192.80.16/29—AzureSphere
20.194.73.240/29—AzureSphere
20.195.65.224/29—AzureSphere
20.195.72.224/29—AzureSphere
20.40.225.168/29—AzureSphere
20.48.196.224/29—AzureSphere
20.49.118.104/29—AzureSphere
20.50.94.128/28—AzureSphere
20.51.32.88/29—AzureSphere
20.51.32.96/30—AzureSphere
20.53.47.72/29—AzureSphere
20.58.67.16/29—AzureSphere
20.61.102.112/29—AzureSphere
20.62.129.152/29—AzureSphere
20.62.133.96/28—AzureSphere
20.62.59.64/29—AzureSphere
20.65.132.72/29—AzureSphere
20.66.4.192/28—AzureSphere
20.66.4.208/29—AzureSphere
4.207.188.96/27—AzureSphere
40.89.23.248/29—AzureSphere
48.195.160.192/27—AzureSphere
48.223.25.0/27—AzureSphere
51.138.210.136/29—AzureSphere
51.143.209.136/29—AzureSphere
52.136.185.144/29—AzureSphere
52.140.111.120/29—AzureSphere
52.146.137.0/29—AzureSphere
52.147.112.136/29—AzureSphere
52.150.157.184/29—AzureSphere
52.172.116.8/29—AzureSphere
52.190.166.32/27—AzureSphere
Showing 40 of 40 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 104.46.179.248/29;
allow 172.169.153.84/30;
allow 172.169.153.88/29;
allow 172.199.129.32/27;
allow 191.238.72.64/29;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 104.46.179.248/29 -j ACCEPT
iptables -A INPUT -s 172.169.153.84/30 -j ACCEPT
iptables -A INPUT -s 172.169.153.88/29 -j ACCEPT
iptables -A INPUT -s 172.199.129.32/27 -j ACCEPT
iptables -A INPUT -s 191.238.72.64/29 -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