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azure · MicrosoftContainerRegistry

Microsoft Azure uses 373 prefixes for MicrosoftContainerRegistry.

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 “MicrosoftContainerRegistry”. 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 prefixes183
IPv6 prefixes190
Regions in the first 100—
Fetched by peekip5 Nov 2026

Prefixes

PrefixRegion / locationService
102.133.122.136/29—MicrosoftContainerRegistry
102.133.154.16/29—MicrosoftContainerRegistry
102.133.250.136/29—MicrosoftContainerRegistry
102.133.26.16/29—MicrosoftContainerRegistry
104.208.144.72/29—MicrosoftContainerRegistry
104.208.16.72/29—MicrosoftContainerRegistry
104.211.146.72/29—MicrosoftContainerRegistry
104.211.81.128/29—MicrosoftContainerRegistry
104.214.18.176/29—MicrosoftContainerRegistry
13.66.140.64/29—MicrosoftContainerRegistry
13.67.8.112/29—MicrosoftContainerRegistry
13.69.106.72/29—MicrosoftContainerRegistry
13.69.227.80/29—MicrosoftContainerRegistry
13.69.64.80/29—MicrosoftContainerRegistry
13.70.72.128/29—MicrosoftContainerRegistry
13.71.170.48/29—MicrosoftContainerRegistry
13.71.194.120/29—MicrosoftContainerRegistry
13.74.107.72/29—MicrosoftContainerRegistry
13.75.34.152/29—MicrosoftContainerRegistry
13.77.50.72/29—MicrosoftContainerRegistry
13.78.106.192/29—MicrosoftContainerRegistry
13.87.32.12/32—MicrosoftContainerRegistry
13.87.33.8/32—MicrosoftContainerRegistry
13.89.170.208/29—MicrosoftContainerRegistry
134.138.96.0/29—MicrosoftContainerRegistry
145.191.175.96/29—MicrosoftContainerRegistry
158.23.10.64/29—MicrosoftContainerRegistry
158.23.122.64/29—MicrosoftContainerRegistry
158.23.194.64/29—MicrosoftContainerRegistry
167.105.104.0/29—MicrosoftContainerRegistry
172.129.89.96/29—MicrosoftContainerRegistry
172.194.112.104/29—MicrosoftContainerRegistry
172.194.86.160/29—MicrosoftContainerRegistry
172.198.112.0/29—MicrosoftContainerRegistry
172.198.144.0/29—MicrosoftContainerRegistry
172.198.168.0/29—MicrosoftContainerRegistry
172.204.182.152/29—MicrosoftContainerRegistry
172.204.192.0/29—MicrosoftContainerRegistry
172.204.208.0/29—MicrosoftContainerRegistry
172.210.216.0/29—MicrosoftContainerRegistry
172.215.202.0/29—MicrosoftContainerRegistry
191.233.203.128/29—MicrosoftContainerRegistry
191.233.50.8/29—MicrosoftContainerRegistry
191.234.146.136/29—MicrosoftContainerRegistry
191.234.154.136/29—MicrosoftContainerRegistry
20.125.170.64/29—MicrosoftContainerRegistry
20.125.202.64/29—MicrosoftContainerRegistry
20.150.170.16/29—MicrosoftContainerRegistry
20.150.178.136/29—MicrosoftContainerRegistry
20.150.186.136/29—MicrosoftContainerRegistry
Showing 50 of 373 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 102.133.122.136/29;
allow 102.133.154.16/29;
allow 102.133.250.136/29;
allow 102.133.26.16/29;
allow 104.208.144.72/29;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 102.133.122.136/29 -j ACCEPT
iptables -A INPUT -s 102.133.154.16/29 -j ACCEPT
iptables -A INPUT -s 102.133.250.136/29 -j ACCEPT
iptables -A INPUT -s 102.133.26.16/29 -j ACCEPT
iptables -A INPUT -s 104.208.144.72/29 -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 5 Nov 2026
  2. Microsoft Azure documentation