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azure · AzureCloud

Microsoft Azure uses 2,216 prefixes for AzureCloud.

Last updated 3 Nov 2026 from Microsoft Azure’s own list (file dated 2026-10-26 (change 424))

Short answer

AzureCloud is every public address Azure uses across all regions.

IPv4 prefixes912
IPv6 prefixes1,304
Regions in the first 100—
Fetched by peekip3 Nov 2026

Prefixes

PrefixRegion / locationService
102.133.0.0/16—AzureCloud
102.37.0.0/16—AzureCloud
103.25.156.0/24—AzureCloud
103.255.140.0/23—AzureCloud
103.36.96.0/24—AzureCloud
104.208.0.0/16—AzureCloud
104.209.0.0/18—AzureCloud
104.209.128.0/17—AzureCloud
104.209.64.0/19—AzureCloud
104.210.0.0/20—AzureCloud
104.210.128.0/19—AzureCloud
104.210.176.0/20—AzureCloud
104.210.192.0/19—AzureCloud
104.210.32.0/19—AzureCloud
104.210.64.0/18—AzureCloud
104.211.0.0/16—AzureCloud
104.214.0.0/15—AzureCloud
104.40.0.0/14—AzureCloud
104.44.128.0/18—AzureCloud
104.44.88.0/21—AzureCloud
104.45.0.0/16—AzureCloud
104.46.0.0/20—AzureCloud
104.46.16.0/26—AzureCloud
104.46.160.0/19—AzureCloud
104.46.192.0/19—AzureCloud
104.46.224.0/20—AzureCloud
104.46.24.0/21—AzureCloud
104.46.32.0/19—AzureCloud
104.46.64.0/18—AzureCloud
104.47.128.0/18—AzureCloud
104.47.200.0/21—AzureCloud
104.47.208.0/21—AzureCloud
104.47.216.64/26—AzureCloud
104.47.218.0/23—AzureCloud
104.47.220.0/22—AzureCloud
104.47.224.0/20—AzureCloud
104.47.248.0/21—AzureCloud
108.140.0.0/14—AzureCloud
111.221.28.0/22—AzureCloud
111.221.80.0/20—AzureCloud
111.221.96.0/20—AzureCloud
128.203.0.0/16—AzureCloud
128.24.0.0/16—AzureCloud
128.251.0.0/16—AzureCloud
128.85.0.0/16—AzureCloud
13.104.128.0/23—AzureCloud
13.104.144.0/20—AzureCloud
13.104.163.0/24—AzureCloud
13.104.169.0/24—AzureCloud
13.104.173.0/24—AzureCloud
Showing 50 of 2,216 prefixes All prefixes (CSV)

What changed

  • 30 Oct 2026
    + 130.107.0.0/16
+ 131.145.0.0/16
+ 132.220.0.0/16
+ 134.149.0.0/16
+ 172.128.0.0/10
+ 2603:1000:104::/47
+ 2603:1000:4::/47
+ 2603:1010:100::/40
+ 2603:1010:304::/47
+ 2603:1010:404::/47
+ 2603:1010:6::/47
+ 2603:1020:1004::/47
+ 2603:1020:1104::/46
+ 2603:1020:1204::/48
+ 2603:1020:1302::/48
+ 2603:1020:1402::/47
+ 2603:1020:206::/47
+ 2603:1020:5::/48
+ 2603:1020:605::/48
+ 2603:1020:705::/48
+ 2603:1020:805::/48
+ 2603:1020:905::/48
+ 2603:1020:a04::/47
+ 2603:1020:b04::/47
+ 2603:1020:c04::/47
+ 2603:1020:d04::/47
+ 2603:1020:e04::/47
+ 2603:1020:f04::/47
+ 2603:1030:1005::/48
+ 2603:1030:10::/47
+ 2603:1030:210::/47
+ 2603:1030:408::/46
+ 2603:1030:40c::/47
+ 2603:1030:702::/48
+ 2603:1030:807::/48
+ 2603:1030:f05::/48
+ 2603:1040:1002::/48
+ 2603:1040:1104::/47
+ 2603:1040:1202::/47
+ 2603:1040:1302::/47
+ 2603:1040:1402::/47
+ 2603:1040:1502::/47
+ 2603:1040:1602::/47
+ 2603:1040:1802::/47
+ 2603:1040:407::/48
+ 2603:1040:5::/48
+ 2603:1040:606::/47
+ 2603:1040:806::/47
+ 2603:1040:904::/47
+ 2603:1040:a06::/47
+ 2603:1040:b04::/47
+ 2603:1040:c06::/47
+ 2603:1040:d04::/47
+ 2603:1040:e05::/48
+ 2603:1040:f05::/48
+ 2603:1050:403::/48
+ 2603:1050:6::/47
+ 2603:1063:2204:1c::/64
+ 2603:1063:4e::/56
+ 4.144.0.0/12

Allowlist formats

nginx (first 5 prefixes)
allow 102.133.0.0/16;
allow 102.37.0.0/16;
allow 103.25.156.0/24;
allow 103.255.140.0/23;
allow 103.36.96.0/24;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 102.133.0.0/16 -j ACCEPT
iptables -A INPUT -s 102.37.0.0/16 -j ACCEPT
iptables -A INPUT -s 103.25.156.0/24 -j ACCEPT
iptables -A INPUT -s 103.255.140.0/23 -j ACCEPT
iptables -A INPUT -s 103.36.96.0/24 -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 3 Nov 2026
  2. Microsoft Azure documentation