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azure · AzureDigitalTwins

Microsoft Azure uses 372 prefixes for AzureDigitalTwins.

Last updated 5 Nov 2026 from Microsoft Azure’s own list (file dated 2026-11-02 (change 425))

Short answer

Microsoft Azure lists these prefixes under “AzureDigitalTwins”. 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 prefixes292
IPv6 prefixes80
Regions in the first 100—
Fetched by peekip5 Nov 2026

Prefixes

PrefixRegion / locationService
102.133.221.16/29—AzureDigitalTwins
102.133.221.32/27—AzureDigitalTwins
102.37.80.0/27—AzureDigitalTwins
102.37.80.32/29—AzureDigitalTwins
104.208.203.238/31—AzureDigitalTwins
104.208.203.240/29—AzureDigitalTwins
104.46.178.120/29—AzureDigitalTwins
104.46.178.160/27—AzureDigitalTwins
134.138.68.152/29—AzureDigitalTwins
134.138.70.32/27—AzureDigitalTwins
145.191.182.80/29—AzureDigitalTwins
157.55.90.48/29—AzureDigitalTwins
157.55.90.56/31—AzureDigitalTwins
158.23.100.96/27—AzureDigitalTwins
172.129.78.0/29—AzureDigitalTwins
172.129.78.32/27—AzureDigitalTwins
172.173.44.192/27—AzureDigitalTwins
172.179.207.224/27—AzureDigitalTwins
172.179.35.128/29—AzureDigitalTwins
172.187.101.136/29—AzureDigitalTwins
172.187.101.186/31—AzureDigitalTwins
172.187.102.16/29—AzureDigitalTwins
172.194.70.0/29—AzureDigitalTwins
172.194.70.32/27—AzureDigitalTwins
172.198.84.152/29—AzureDigitalTwins
172.198.86.32/27—AzureDigitalTwins
172.204.156.0/27—AzureDigitalTwins
172.205.60.10/31—AzureDigitalTwins
172.205.65.232/29—AzureDigitalTwins
172.207.65.54/31—AzureDigitalTwins
172.207.65.56/29—AzureDigitalTwins
172.211.126.88/29—AzureDigitalTwins
191.233.15.16/29—AzureDigitalTwins
191.233.15.32/27—AzureDigitalTwins
191.234.139.168/29—AzureDigitalTwins
191.234.142.0/27—AzureDigitalTwins
20.150.166.176/29—AzureDigitalTwins
20.150.167.128/27—AzureDigitalTwins
20.168.190.152/29—AzureDigitalTwins
20.17.116.0/27—AzureDigitalTwins
20.17.51.192/27—AzureDigitalTwins
20.185.75.209/32—AzureDigitalTwins
20.185.75.6/32—AzureDigitalTwins
20.187.197.128/27—AzureDigitalTwins
20.187.197.16/29—AzureDigitalTwins
20.189.224.224/27—AzureDigitalTwins
20.189.225.64/29—AzureDigitalTwins
20.191.161.192/29—AzureDigitalTwins
20.191.161.96/27—AzureDigitalTwins
20.192.166.176/29—AzureDigitalTwins
Showing 50 of 372 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 102.133.221.16/29;
allow 102.133.221.32/27;
allow 102.37.80.0/27;
allow 102.37.80.32/29;
allow 104.208.203.238/31;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 102.133.221.16/29 -j ACCEPT
iptables -A INPUT -s 102.133.221.32/27 -j ACCEPT
iptables -A INPUT -s 102.37.80.0/27 -j ACCEPT
iptables -A INPUT -s 102.37.80.32/29 -j ACCEPT
iptables -A INPUT -s 104.208.203.238/31 -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 5 Nov 2026
  2. Microsoft Azure documentation