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azure · AzureFrontDoor.FirstParty

Microsoft Azure uses 71 prefixes for AzureFrontDoor.FirstParty.

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 “AzureFrontDoor.FirstParty”. 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 prefixes43
IPv6 prefixes28
Regions in the first 100—
Fetched by peekip4 Nov 2026

Prefixes

PrefixRegion / locationService
13.107.12.0/23—AzureFrontDoor.FirstParty
13.107.128.0/19—AzureFrontDoor.FirstParty
13.107.15.0/24—AzureFrontDoor.FirstParty
13.107.16.0/24—AzureFrontDoor.FirstParty
13.107.18.0/23—AzureFrontDoor.FirstParty
13.107.21.0/24—AzureFrontDoor.FirstParty
13.107.22.0/24—AzureFrontDoor.FirstParty
13.107.245.0/24—AzureFrontDoor.FirstParty
13.107.254.0/23—AzureFrontDoor.FirstParty
13.107.3.0/24—AzureFrontDoor.FirstParty
13.107.37.0/24—AzureFrontDoor.FirstParty
13.107.38.0/23—AzureFrontDoor.FirstParty
13.107.4.0/22—AzureFrontDoor.FirstParty
13.107.40.0/24—AzureFrontDoor.FirstParty
13.107.42.0/23—AzureFrontDoor.FirstParty
13.107.48.0/24—AzureFrontDoor.FirstParty
13.107.50.0/24—AzureFrontDoor.FirstParty
13.107.52.0/24—AzureFrontDoor.FirstParty
13.107.54.0/24—AzureFrontDoor.FirstParty
13.107.56.0/24—AzureFrontDoor.FirstParty
13.107.64.0/18—AzureFrontDoor.FirstParty
13.107.9.0/24—AzureFrontDoor.FirstParty
131.253.21.0/24—AzureFrontDoor.FirstParty
131.253.3.0/24—AzureFrontDoor.FirstParty
131.253.33.0/24—AzureFrontDoor.FirstParty
150.171.100.0/22—AzureFrontDoor.FirstParty
150.171.104.0/22—AzureFrontDoor.FirstParty
150.171.108.0/24—AzureFrontDoor.FirstParty
150.171.24.0/23—AzureFrontDoor.FirstParty
150.171.27.0/24—AzureFrontDoor.FirstParty
150.171.28.0/23—AzureFrontDoor.FirstParty
150.171.30.0/24—AzureFrontDoor.FirstParty
150.171.32.0/19—AzureFrontDoor.FirstParty
150.171.65.0/24—AzureFrontDoor.FirstParty
150.171.66.0/23—AzureFrontDoor.FirstParty
150.171.69.0/24—AzureFrontDoor.FirstParty
150.171.70.0/23—AzureFrontDoor.FirstParty
150.171.72.0/21—AzureFrontDoor.FirstParty
150.171.82.0/23—AzureFrontDoor.FirstParty
150.171.98.0/23—AzureFrontDoor.FirstParty
202.89.233.96/28—AzureFrontDoor.FirstParty
204.79.197.0/24—AzureFrontDoor.FirstParty
52.107.220.0/22—AzureFrontDoor.FirstParty
2603:1061:10::/48—AzureFrontDoor.FirstParty
2603:1061:12::/48—AzureFrontDoor.FirstParty
2603:1061:13e0::/44—AzureFrontDoor.FirstParty
2603:1061:f::/48—AzureFrontDoor.FirstParty
2603:10e1:0:100::/56—AzureFrontDoor.FirstParty
2603:10e1:1::/48—AzureFrontDoor.FirstParty
2620:1ec:12::/47—AzureFrontDoor.FirstParty
Showing 50 of 71 prefixes All prefixes (CSV)

What changed

  • 30 Oct 2026
    + 2603:1061:13e0::/44
+ 52.107.220.0/22

Allowlist formats

nginx (first 5 prefixes)
allow 13.107.12.0/23;
allow 13.107.128.0/19;
allow 13.107.15.0/24;
allow 13.107.16.0/24;
allow 13.107.18.0/23;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 13.107.12.0/23 -j ACCEPT
iptables -A INPUT -s 13.107.128.0/19 -j ACCEPT
iptables -A INPUT -s 13.107.15.0/24 -j ACCEPT
iptables -A INPUT -s 13.107.16.0/24 -j ACCEPT
iptables -A INPUT -s 13.107.18.0/23 -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