Azure service tags
Public-cloud IP prefixes by service and region, the exact differences between Microsoft's weekly publications, and lists your firewall can read.
Observed changes in publication 424
Publication 426 · 3398 tags · checked today 01:16 UTC · next 13 Nov 01:16 UTCMost recent 6 observation dates · retained from 7 Oct 2026 to 11 Nov 2026. Choose any date in that range.
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AzureCloud.southwestusChanged tag · publication 423 → 424
Addresses+2 IPv4 addresses and 1 IPv6 rangenone dropped
2 wider prefixes replace 4 prefixes they still cover.
Prefixes as published+2−4
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Added
20.20.112.160/29replaces20.20.112.160/3020.20.112.164/31· new20.20.112.166/31 -
Added
2603:1061:1014:48::/62replaces2603:1061:1014:48::/632603:1061:1014:4a::/64· new2603:1061:1014:4b::/64
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Added
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AzureCloud.spaincentralChanged tag · publication 423 → 424
Addresses+2 IPv4 addresses and 3 IPv6 rangesnone dropped
Prefixes+3−134
- Removed
2603:1020:1402::/48 - Removed
2603:1020:1403:0:1000::/68 - Removed
2603:1020:1403:0:100::/72 - Removed
2603:1020:1403:0:10::/76 - Removed
2603:1020:1403:0:1::/80 - Removed
2603:1020:1403:0:2000::/67
- Removed
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AzureCloud.swedencentralChanged tag · publication 423 → 424
Addresses+36,154 IPv4 addresses and 2 IPv6 rangesnone dropped
Prefixes+20−162
- Removed
2603:1020:1004:0:1000::/68 - Removed
2603:1020:1004:0:100::/72 - Removed
2603:1020:1004:0:10::/76 - Removed
2603:1020:1004:0:1::/80 - Removed
2603:1020:1004:0:2000::/67 - Removed
2603:1020:1004:0:200::/71
- Removed
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AzureCloud.swedensouthChanged tag · publication 423 → 424
Addresses+3 IPv6 rangesnone dropped
Prefixes+1−134
- Removed
2603:1020:1104:0:1000::/68 - Removed
2603:1020:1104:0:100::/72 - Removed
2603:1020:1104:0:10::/76 - Removed
2603:1020:1104:0:1::/80 - Removed
2603:1020:1104:0:2000::/67 - Removed
2603:1020:1104:0:200::/71
- Removed
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AzureCloud.switzerlandnChanged tag · publication 423 → 424
Addresses+4 IPv4 addresses and 3 IPv6 rangesnone dropped
Prefixes+3−136
- Removed
2603:1020:a04:1000::/52 - Removed
2603:1020:a04:100::/56 - Removed
2603:1020:a04:10::/60 - Removed
2603:1020:a04:1:0:1000::/84 - Removed
2603:1020:a04:1:0:100::/88 - Removed
2603:1020:a04:1:0:10::/92
- Removed
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AzureCloud.switzerlandwChanged tag · publication 423 → 424
Addresses+3 IPv6 rangesnone dropped
Prefixes+1−137
- Removed
2603:1020:b04:0:1000::/68 - Removed
2603:1020:b04:0:100::/72 - Removed
2603:1020:b04:0:10::/76 - Removed
2603:1020:b04:0:1::/80 - Removed
2603:1020:b04:0:2000::/67 - Removed
2603:1020:b04:0:200::/71
- Removed
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AzureCloud.taiwannorthChanged tag · publication 423 → 424
Addresses+3 IPv6 rangesnone dropped
Prefixes+1−132
- Removed
2603:1040:1302:0:1000::/68 - Removed
2603:1040:1302:0:100::/72 - Removed
2603:1040:1302:0:10::/76 - Removed
2603:1040:1302:0:1::/80 - Removed
2603:1040:1302:0:2000::/67 - Removed
2603:1040:1302:0:200::/71
- Removed
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AzureCloud.taiwannorthwestChanged tag · publication 423 → 424
Addresses+4 IPv6 rangesnone dropped
Prefixes+2−132
- Removed
2603:1040:1202:0:1000::/68 - Removed
2603:1040:1202:0:100::/72 - Removed
2603:1040:1202:0:10::/76 - Removed
2603:1040:1202:0:1::/80 - Removed
2603:1040:1202:0:2000::/67 - Removed
2603:1040:1202:0:200::/71
- Removed
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AzureCloud.uaecentralChanged tag · publication 423 → 424
Addresses+2 IPv6 rangesnone dropped
Prefixes+1−132
- Removed
2603:1040:b04:0:1000::/68 - Removed
2603:1040:b04:0:100::/72 - Removed
2603:1040:b04:0:10::/76 - Removed
2603:1040:b04:0:1::/80 - Removed
2603:1040:b04:0:2000::/67 - Removed
2603:1040:b04:0:200::/71
- Removed
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AzureCloud.uaenorthChanged tag · publication 423 → 424
Addresses+258 IPv4 addresses and 2 IPv6 rangesnone dropped
Prefixes+3−134
- Removed
2603:1040:904:1000::/52 - Removed
2603:1040:904:100::/56 - Removed
2603:1040:904:10::/60 - Removed
2603:1040:904:1:0:1000::/84 - Removed
2603:1040:904:1:0:100::/88 - Removed
2603:1040:904:1:0:10::/92
- Removed
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AzureCloud.uksouthChanged tag · publication 423 → 424
Addresses+639 IPv4 addresses and 2 IPv6 rangesnone dropped
Prefixes+13−230
- Removed
131.145.0.0/18 - Removed
131.145.104.0/22 - Removed
131.145.108.0/26 - Removed
131.145.108.120/29 - Removed
131.145.108.128/25 - Removed
131.145.108.64/27
- Removed
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AzureCloud.ukwestChanged tag · publication 423 → 424
Addresses+3 IPv6 rangesnone dropped
Prefixes+1−133
- Removed
2603:1020:605:0:1000::/68 - Removed
2603:1020:605:0:100::/72 - Removed
2603:1020:605:0:10::/76 - Removed
2603:1020:605:0:1::/80 - Removed
2603:1020:605:0:2000::/67 - Removed
2603:1020:605:0:200::/71
- Removed
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AzureCloud.usstagecChanged tag · publication 423 → 424
Addresses+2 IPv4 addresses and 1 IPv6 rangenone dropped
Prefixes as published+2
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Added
40.123.165.46/31new -
Added
2603:1030:804:30d::/64new
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Added
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AzureCloud.westcentralusChanged tag · publication 423 → 424
Addresses+266 IPv4 addressesnone dropped
1 wider prefix replaces 3 prefixes it still covers; 2 prefixes are new.
Prefixes as published+3−3
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Added
57.157.82.0/27replaces57.157.82.0/2857.157.82.16/2957.157.82.24/31· new57.157.82.26/3157.157.82.28/30 -
Added
57.157.82.32/30new -
Added
57.171.113.0/24new
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Added
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AzureCloud.westeuropeChanged tag · publication 423 → 424
Addresses+33,074 IPv4 addresses and 2 IPv6 rangesnone dropped
Prefixes+5−163
- Removed
132.220.0.0/18 - Removed
132.220.128.0/17 - Removed
132.220.64.0/20 - Removed
132.220.80.0/22 - Removed
132.220.84.0/24 - Removed
132.220.85.0/25
- Removed
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AzureCloud.westindiaChanged tag · publication 423 → 424
Addresses+3 IPv6 rangesnone dropped
Prefixes+1−134
- Removed
2603:1040:806:0:1000::/68 - Removed
2603:1040:806:0:100::/72 - Removed
2603:1040:806:0:10::/76 - Removed
2603:1040:806:0:1::/80 - Removed
2603:1040:806:0:2000::/67 - Removed
2603:1040:806:0:200::/71
- Removed
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AzureCloud.westusChanged tag · publication 423 → 424
Addresses+512 IPv4 addressesnone dropped
Prefixes as published+2
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Added
57.171.102.0/24new -
Added
57.171.117.0/24new
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Added
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AzureCloud.westus2Changed tag · publication 423 → 424
Addresses+844 IPv4 addressesnone dropped
Prefixes+6−3
- Removed
57.157.74.0/26 - Removed
57.157.74.64/29 - Removed
57.157.74.72/30 - Added
20.20.58.96/28 - Added
57.157.74.0/25 - Added
57.157.74.128/29
- Removed
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AzureCloud.westus3Changed tag · publication 423 → 424
Addresses+300 IPv4 addressesnone dropped
Prefixes+6−4
- Removed
57.157.130.128/27 - Removed
57.157.130.160/28 - Removed
57.157.130.176/29 - Removed
57.157.130.184/31 - Added
20.20.58.112/28 - Added
57.157.130.128/26
- Removed
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AzureCognitiveSearch.SoutheastAsia3Added tag · publication 423 → 424
Addresses+64 IPv4 addresses and 1 IPv6 rangenone dropped
Prefixes as published+2
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Added
48.198.80.192/26new -
Added
2603:1040:1b02::100/121new
ID: absent → AzureCognitiveSearch.SoutheastAsia3; Region: absent → southeastasia3; Region ID: absent → 110; Service: absent → AzureCognitiveSearch; Platform: absent → Azure; Network features: absent →
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Added
Services
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