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azure · EOPExternalPublishedIPs

Microsoft Azure uses 149 prefixes for EOPExternalPublishedIPs.

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 “EOPExternalPublishedIPs”. 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 prefixes147
IPv6 prefixes2
Regions in the first 100—
Fetched by peekip5 Nov 2026

Prefixes

PrefixRegion / locationService
104.47.0.1/32—EOPExternalPublishedIPs
104.47.0.2/31—EOPExternalPublishedIPs
104.47.1.1/32—EOPExternalPublishedIPs
104.47.1.2/31—EOPExternalPublishedIPs
104.47.10.1/32—EOPExternalPublishedIPs
104.47.10.2/31—EOPExternalPublishedIPs
104.47.11.0/24—EOPExternalPublishedIPs
104.47.110.0/24—EOPExternalPublishedIPs
104.47.116.1/32—EOPExternalPublishedIPs
104.47.116.2/31—EOPExternalPublishedIPs
104.47.117.1/32—EOPExternalPublishedIPs
104.47.117.2/31—EOPExternalPublishedIPs
104.47.118.0/23—EOPExternalPublishedIPs
104.47.120.1/32—EOPExternalPublishedIPs
104.47.120.2/31—EOPExternalPublishedIPs
104.47.121.1/32—EOPExternalPublishedIPs
104.47.121.2/31—EOPExternalPublishedIPs
104.47.124.1/32—EOPExternalPublishedIPs
104.47.124.2/31—EOPExternalPublishedIPs
104.47.125.1/32—EOPExternalPublishedIPs
104.47.125.2/31—EOPExternalPublishedIPs
104.47.127.0/24—EOPExternalPublishedIPs
104.47.15.0/24—EOPExternalPublishedIPs
104.47.16.0/22—EOPExternalPublishedIPs
104.47.2.1/32—EOPExternalPublishedIPs
104.47.2.2/31—EOPExternalPublishedIPs
104.47.22.0/23—EOPExternalPublishedIPs
104.47.24.0/21—EOPExternalPublishedIPs
104.47.3.0/24—EOPExternalPublishedIPs
104.47.32.1/32—EOPExternalPublishedIPs
104.47.32.2/31—EOPExternalPublishedIPs
104.47.33.1/32—EOPExternalPublishedIPs
104.47.33.2/31—EOPExternalPublishedIPs
104.47.34.0/24—EOPExternalPublishedIPs
104.47.38.1/32—EOPExternalPublishedIPs
104.47.38.2/31—EOPExternalPublishedIPs
104.47.39.0/24—EOPExternalPublishedIPs
104.47.4.1/32—EOPExternalPublishedIPs
104.47.4.2/31—EOPExternalPublishedIPs
104.47.40.1/32—EOPExternalPublishedIPs
104.47.40.2/31—EOPExternalPublishedIPs
104.47.41.1/32—EOPExternalPublishedIPs
104.47.41.2/31—EOPExternalPublishedIPs
104.47.42.0/23—EOPExternalPublishedIPs
104.47.44.1/32—EOPExternalPublishedIPs
104.47.44.2/31—EOPExternalPublishedIPs
104.47.45.1/32—EOPExternalPublishedIPs
104.47.45.2/31—EOPExternalPublishedIPs
104.47.46.1/32—EOPExternalPublishedIPs
104.47.46.2/31—EOPExternalPublishedIPs
Showing 50 of 149 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 104.47.0.1/32;
allow 104.47.0.2/31;
allow 104.47.1.1/32;
allow 104.47.1.2/31;
allow 104.47.10.1/32;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 104.47.0.1/32 -j ACCEPT
iptables -A INPUT -s 104.47.0.2/31 -j ACCEPT
iptables -A INPUT -s 104.47.1.1/32 -j ACCEPT
iptables -A INPUT -s 104.47.1.2/31 -j ACCEPT
iptables -A INPUT -s 104.47.10.1/32 -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