| UK-MICROSOFT-20000324 | ||||
| 172.128.0.0 — 172.191.255.255 | United Kingdom | 172.128.0.0/10 | 4194304 | |
| GB-MICROSOFT | ||||
| 57.150.0.0 — 57.175.255.255 | Microsoft Limited UK | United Kingdom | 57.150.0.0/15, 57.152.0.0/13, 57.160.0.0/12 | 1703936 |
| 147.243.0.0 — 147.243.255.255 | Microsoft Limited UK | United Kingdom | 147.243.0.0/16 | 65536 |
| 192.100.102.0 — 192.100.133.255 | Microsoft Limited UK | United Kingdom | 192.100.102.0/23, 192.100.104.0/21, 192.100.112.0/20, 192.100.128.0/22, 192.100.132.0/23 | 8192 |
| UK-MICROSOFT-19901207 | ||||
| 48.192.0.0 — 48.221.255.255 | United Kingdom | 48.192.0.0/12, 48.208.0.0/13, 48.216.0.0/14, 48.220.0.0/15 | 1966080 | |
| UK-MICROSOFT-20020213 | ||||
| 172.200.0.0 — 172.215.255.255 | United Kingdom | 172.200.0.0/13, 172.208.0.0/13 | 1048576 | |
| UK-MICROSOFT-20060628 | ||||
| 74.144.0.0 — 74.159.255.255 | United Kingdom | 74.144.0.0/12 | 1048576 | |
| MICROSOFT | ||||
| 51.140.0.0 — 51.145.255.255 | Microsoft Limited UK | United Kingdom | 51.140.0.0/14, 51.144.0.0/15 | 393216 |
| 51.10.0.0 — 51.13.255.255 | Microsoft Limited UK | United Kingdom | 51.10.0.0/15, 51.12.0.0/15 | 262144 |
| 51.103.0.0 — 51.105.255.255 | Microsoft Limited UK | United Kingdom | 51.103.0.0/16, 51.104.0.0/15 | 196608 |
| 51.136.0.0 — 51.138.255.255 | Microsoft Limited UK | United Kingdom | 51.136.0.0/15, 51.138.0.0/16 | 196608 |
| 51.53.0.0 — 51.53.255.255 | Microsoft Limited UK | United Kingdom | 51.53.0.0/16 | 65536 |
| 51.107.0.0 — 51.107.255.255 | Microsoft Limited UK | United Kingdom | 51.107.0.0/16 | 65536 |
| 51.116.0.0 — 51.116.255.255 | Microsoft Limited UK | United Kingdom | 51.116.0.0/16 | 65536 |
| 51.120.0.0 — 51.120.255.255 | Microsoft Limited UK | United Kingdom | 51.120.0.0/16 | 65536 |
| 51.124.0.0 — 51.124.255.255 | Microsoft Limited UK | United Kingdom | 51.124.0.0/16 | 65536 |
| 51.132.0.0 — 51.132.255.255 | Microsoft Limited UK | United Kingdom | 51.132.0.0/16 | 65536 |
| 51.51.0.0 — 51.51.255.255 | Microsoft Limited UK | United Kingdom | 51.51.0.0/16 | 65536 |
| 194.41.16.0 — 194.41.31.255 | United Kingdom | 194.41.16.0/20 | 4096 | |
| UK-MICROSOFT-960430 | ||||
| 135.232.0.0 — 135.237.255.255 | United Kingdom | 135.232.0.0/14, 135.236.0.0/15 | 393216 | |
| 135.224.0.0 — 135.226.255.255 | United Kingdom | 135.224.0.0/15, 135.226.0.0/16 | 196608 | |
| 135.229.0.0 — 135.230.255.255 | United Kingdom | 135.229.0.0/16, 135.230.0.0/16 | 131072 | |
| 135.4.0.0 — 135.4.255.255 | United Kingdom | 135.4.0.0/16 | 65536 | |
| 135.116.0.0 — 135.116.255.255 | United Kingdom | 135.116.0.0/16 | 65536 | |
| UK-MICROSOFT-19980212 | ||||
| 40.169.0.0 — 40.171.255.255 | United Kingdom | 40.169.0.0/16, 40.170.0.0/15 | 196608 | |
| 209.199.0.0 — 209.199.255.255 | United Kingdom | 209.199.0.0/16 | 65536 | |
| UK-MICROSOFT-20050222 | ||||
| 85.210.0.0 — 85.212.255.255 | United Kingdom | 85.210.0.0/15, 85.212.0.0/16 | 196608 | |
| UK-MICROSOFT-19960430 | ||||
| 135.6.0.0 — 135.7.255.255 | United Kingdom | 135.6.0.0/15 | 131072 | |
| 135.240.0.0 — 135.241.255.255 | United Kingdom | 135.240.0.0/15 | 131072 | |
| 135.118.0.0 — 135.119.255.255 | United Kingdom | 135.118.0.0/15 | 131072 | |
| 135.18.0.0 — 135.18.255.255 | United Kingdom | 135.18.0.0/16 | 65536 | |
| 135.171.0.0 — 135.171.255.255 | United Kingdom | 135.171.0.0/16 | 65536 | |
| 135.85.0.0 — 135.85.255.255 | United Kingdom | 135.85.0.0/16 | 65536 | |
| 135.185.0.0 — 135.185.255.255 | United Kingdom | 135.185.0.0/16 | 65536 | |
| 135.114.0.0 — 135.114.255.255 | United Kingdom | 135.114.0.0/16 | 65536 | |
| 135.93.0.0 — 135.93.255.255 | United Kingdom | 135.93.0.0/16 | 65536 | |
| 135.244.0.0 — 135.244.255.255 | United Kingdom | 135.244.0.0/16 | 65536 | |
| 135.255.0.0 — 135.255.255.255 | United Kingdom | 135.255.0.0/16 | 65536 | |
| 135.88.0.0 — 135.88.255.255 | United Kingdom | 135.88.0.0/16 | 65536 | |
| 135.220.0.0 — 135.220.255.255 | United Kingdom | 135.220.0.0/16 | 65536 | |
| 199.118.0.0 — 199.118.255.255 | United Kingdom | 199.118.0.0/16 | 65536 | |
| 135.222.0.0 — 135.222.255.255 | United Kingdom | 135.222.0.0/16 | 65536 | |
| UK-MICROSOFT-19990810 | ||||
| 62.10.0.0 — 62.11.255.255 | United Kingdom | 62.10.0.0/15 | 131072 | |
| UK-MICROSOFT-20040602 | ||||
| 84.222.0.0 — 84.223.255.255 | United Kingdom | 84.222.0.0/15 | 131072 | |
| UK-MICROSOFT-19881216 | ||||
| 9.145.0.0 — 9.146.255.255 | United Kingdom | 9.145.0.0/16, 9.146.0.0/16 | 131072 | |
| 9.234.0.0 — 9.235.255.255 | United Kingdom | 9.234.0.0/15 | 131072 | |
| 9.141.0.0 — 9.141.255.255 | United Kingdom | 9.141.0.0/16 | 65536 | |
| 9.160.0.0 — 9.160.255.255 | United Kingdom | 9.160.0.0/16 | 65536 | |
| 9.163.0.0 — 9.163.255.255 | United Kingdom | 9.163.0.0/16 | 65536 | |
| 9.169.0.0 — 9.169.255.255 | United Kingdom | 9.169.0.0/16 | 65536 | |
| 9.205.0.0 — 9.205.255.255 | United Kingdom | 9.205.0.0/16 | 65536 | |
| 9.223.0.0 — 9.223.255.255 | United Kingdom | 9.223.0.0/16 | 65536 | |
| UK-MICROSOFT-19930901 | ||||
| 145.132.0.0 — 145.133.255.255 | United Kingdom | 145.132.0.0/15 | 131072 | |
| UK-MICROSOFT-19930810 | ||||
| 167.162.0.0 — 167.162.255.255 | Transferred to the RIPE region on 2022-09-06T11:36:42Z. | United Kingdom | 167.162.0.0/16 | 65536 |
| UK-MICROSOFT-20060515 | ||||
| 124.252.0.0 — 124.252.255.255 | Transferred to the RIPE region on 2023-09-05T07:52:02Z. | United Kingdom | 124.252.0.0/16 | 65536 |
| UK-MICROSOFT-20110121 | ||||
| 165.15.0.0 — 165.15.255.255 | Transferred to the RIPE region on 2023-09-26T08:11:18Z. | United Kingdom | 165.15.0.0/16 | 65536 |
| UK-MICROSOFT-20110120 | ||||
| 157.81.0.0 — 157.81.255.255 | Transferred to the RIPE region on 2023-09-26T08:15:29Z. | United Kingdom | 157.81.0.0/16 | 65536 |
| UK-MICROSOFT-20070105 | ||||
| 122.149.0.0 — 122.149.255.255 | Transferred to the RIPE region on 2023-10-03T11:02:52Z. | United Kingdom | 122.149.0.0/16 | 65536 |
| UK-MICROSOFT-20100713 | ||||
| 1.186.0.0 — 1.186.255.255 | Transferred to the RIPE region on 2023-10-31T09:53:32Z. | United Kingdom | 1.186.0.0/16 | 65536 |
| UK-MICROSOFT-19900530 | ||||
| 138.213.0.0 — 138.213.255.255 | Transferred to the RIPE region on 2023-11-07T10:12:36Z. | United Kingdom | 138.213.0.0/16 | 65536 |
| UK-MICROSOFT-19930416 | ||||
| 160.234.0.0 — 160.234.255.255 | Transferred to the RIPE region on 2023-11-07T16:36:50Z. | United Kingdom | 160.234.0.0/16 | 65536 |
| UK-MICROSOFT-20060703 | ||||
| 165.17.0.0 — 165.17.255.255 | Transferred to the RIPE region on 2023-11-08T11:46:38Z. | United Kingdom | 165.17.0.0/16 | 65536 |
| UK-MICROSOFT-19900329 | ||||
| 139.188.0.0 — 139.188.255.255 | Transferred to the RIPE region on 2024-03-05T10:47:07Z. | United Kingdom | 139.188.0.0/16 | 65536 |
| UK-MICROSOFT-19920117 | ||||
| 157.172.0.0 — 157.172.255.255 | United Kingdom | 157.172.0.0/16 | 65536 | |
| UK-MICROSOFT-19890313 | ||||
| 132.196.0.0 — 132.196.255.255 | United Kingdom | 132.196.0.0/16 | 65536 | |
| UK-MICROSOFT-19890609 | ||||
| 134.138.0.0 — 134.138.255.255 | United Kingdom | 134.138.0.0/16 | 65536 | |
| UK-MICROSOFT-19910617 | ||||
| 151.129.0.0 — 151.129.255.255 | United Kingdom | 151.129.0.0/16 | 65536 | |
| UK-MICROSOFT-19910724 | ||||
| 147.214.0.0 — 147.214.255.255 | United Kingdom | 147.214.0.0/16 | 65536 | |
| UK-MICROSOFT-19920414 | ||||
| 159.128.0.0 — 159.128.255.255 | United Kingdom | 159.128.0.0/16 | 65536 | |
| UK-MICROSOFT-19920129 | ||||
| 157.31.0.0 — 157.31.255.255 | United Kingdom | 157.31.0.0/16 | 65536 | |
| UK-MICROSOFT-19900425 | ||||
| 138.105.0.0 — 138.105.255.255 | United Kingdom | 138.105.0.0/16 | 65536 | |
| UK-MICROSOFT-19940106 | ||||
| 135.130.0.0 — 135.130.255.255 | United Kingdom | 135.130.0.0/16 | 65536 | |
| UK-MICROSOFT-19890224 | ||||
| 132.164.0.0 — 132.164.255.255 | United Kingdom | 132.164.0.0/16 | 65536 | |
| UK-MICROSOFT-19910925 | ||||
| 151.206.0.0 — 151.206.255.255 | United Kingdom | 151.206.0.0/16 | 65536 | |
| UK-MICROSOFT-19920330 | ||||
| 157.95.0.0 — 157.95.255.255 | United Kingdom | 157.95.0.0/16 | 65536 | |
| UK-MICROSOFT-19930914 | ||||
| 167.186.0.0 — 167.186.255.255 | United Kingdom | 167.186.0.0/16 | 65536 | |
| UK-MICROSOFT-19991101 | ||||
| 213.54.0.0 — 213.54.255.255 | United Kingdom | 213.54.0.0/16 | 65536 | |
| UK-MICROSOFT-19910821 | ||||
| 152.138.0.0 — 152.138.255.255 | United Kingdom | 152.138.0.0/16 | 65536 | |
| UK-MICROSOFT-19910513 | ||||
| 149.198.0.0 — 149.198.255.255 | United Kingdom | 149.198.0.0/16 | 65536 | |
| UK-MICROSOFT-19850730 | ||||
| 128.85.0.0 — 128.85.255.255 | United Kingdom | 128.85.0.0/16 | 65536 | |
| UK-MICROSOFT-20030917 | ||||
| 82.87.0.0 — 82.87.255.255 | United Kingdom | 82.87.0.0/16 | 65536 | |
| UK-MICROSOFT-19980717 | ||||
| 212.207.0.0 — 212.207.255.255 | United Kingdom | 212.207.0.0/16 | 65536 | |
| UK-MICROSOFT-20010302 | ||||
| 217.176.0.0 — 217.176.255.255 | United Kingdom | 217.176.0.0/16 | 65536 | |
| 217.177.96.0 — 217.177.127.255 | United Kingdom | 217.177.96.0/19 | 8192 | |
| UK-MICROSOFT-19900630 | ||||
| 143.226.0.0 — 143.226.255.255 | United Kingdom | 143.226.0.0/16 | 65536 | |
| 143.209.0.0 — 143.209.255.255 | United Kingdom | 143.209.0.0/16 | 65536 | |
| UK-MICROSOFT-20091119 | ||||
| 109.246.0.0 — 109.246.255.255 | United Kingdom | 109.246.0.0/16 | 65536 | |
| UK-MICROSOFT-20090910 | ||||
| 173.200.0.0 — 173.200.255.255 | United Kingdom | 173.200.0.0/16 | 65536 | |
| 72.16.128.0 — 72.16.255.255 | United Kingdom | 72.16.128.0/17 | 32768 | |
| UK-MICROSOFT-19931109 | ||||
| 167.231.0.0 — 167.231.255.255 | United Kingdom | 167.231.0.0/16 | 65536 | |
| UK-MICROSOFT-19960416 | ||||
| 207.103.0.0 — 207.103.255.255 | United Kingdom | 207.103.0.0/16 | 65536 | |
| UK-MICROSOFT-19910312 | ||||
| 132.220.0.0 — 132.220.255.255 | United Kingdom | 132.220.0.0/16 | 65536 | |
| UK-MICROSOFT-19920208 | ||||
| 157.252.0.0 — 157.252.255.255 | United Kingdom | 157.252.0.0/16 | 65536 | |
| UK-MICROSOFT-19860523 | ||||
| 134.112.0.0 — 134.112.255.255 | United Kingdom | 134.112.0.0/16 | 65536 | |
| UK-MICROSOFT-19830512 | ||||
| 128.24.0.0 — 128.24.255.255 | United Kingdom | 128.24.0.0/16 | 65536 | |
| UK-MICROSOFT-19880812 | ||||
| 130.131.0.0 — 130.131.255.255 | United Kingdom | 130.131.0.0/16 | 65536 | |
| UK-MICROSOFT-19890424 | ||||
| 134.33.0.0 — 134.33.255.255 | United Kingdom | 134.33.0.0/16 | 65536 | |
| UK-MICROSOFT-19870219 | ||||
| 128.203.0.0 — 128.203.255.255 | United Kingdom | 128.203.0.0/16 | 65536 | |
| UK-MICROSOFT-19920121 | ||||
| 72.54.0.0 — 72.54.255.255 | United Kingdom | 72.54.0.0/16 | 65536 | |
| UK-MICROSOFT-1920121 | ||||
| 157.176.0.0 — 157.176.255.255 | United Kingdom | 157.176.0.0/16 | 65536 | |
| UK-MICROSOFT-19920619 | ||||
| 156.23.0.0 — 156.23.255.255 | United Kingdom | 156.23.0.0/16 | 65536 | |
| UK-MICROSOFT-19920611 | ||||
| 160.207.0.0 — 160.207.255.255 | United Kingdom | 160.207.0.0/16 | 65536 | |
| UK-MICROSOFT-19891212 | ||||
| 137.162.0.0 — 137.162.255.255 | United Kingdom | 137.162.0.0/16 | 65536 | |
| UK-MICROSOFT-19910509 | ||||
| 149.175.0.0 — 149.175.255.255 | United Kingdom | 149.175.0.0/16 | 65536 | |
| UK-MICROSOFT-19871210 | ||||
| 129.135.0.0 — 129.135.255.255 | United Kingdom | 129.135.0.0/16 | 65536 | |
| UK-MICROSOFT-19881213 | ||||
| 131.163.0.0 — 131.163.255.255 | United Kingdom | 131.163.0.0/16 | 65536 | |
| UK-MICROSOFT-19910404 | ||||
| 148.53.0.0 — 148.53.255.255 | United Kingdom | 148.53.0.0/16 | 65536 | |
| UK-MICROSOFT-19890104 | ||||
| 131.189.0.0 — 131.189.255.255 | United Kingdom | 131.189.0.0/16 | 65536 | |
| UK-MICROSOFT-20021209 | ||||
| 69.15.0.0 — 69.15.255.255 | United Kingdom | 69.15.0.0/16 | 65536 | |
| UK-MICROSOFT-19920207 | ||||
| 158.24.0.0 — 158.24.255.255 | United Kingdom | 158.24.0.0/16 | 65536 | |
| UK-MICROSOFT-19921221 | ||||
| 161.157.0.0 — 161.157.255.255 | United Kingdom | 161.157.0.0/16 | 65536 | |
| UK-MICROSOFT-19931108 | ||||
| 199.50.0.0 — 199.50.255.255 | United Kingdom | 199.50.0.0/16 | 65536 | |
| UK-MICROSOFT-19881014 | ||||
| 130.213.0.0 — 130.213.255.255 | United Kingdom | 130.213.0.0/16 | 65536 | |
| UK-MICROSOFT-19890614 | ||||
| 134.149.0.0 — 134.149.255.255 | United Kingdom | 134.149.0.0/16 | 65536 | |
| UK-MICROSOFT-19901023 | ||||
| 143.241.0.0 — 143.241.255.255 | United Kingdom | 143.241.0.0/16 | 65536 | |
| UK-MICROSOFT-19920214 | ||||
| 158.53.0.0 — 158.53.255.255 | United Kingdom | 158.53.0.0/16 | 65536 | |
| UK-MICROSOFT-20210413 | ||||
| 161.220.0.0 — 161.220.255.255 | United Kingdom | 161.220.0.0/16 | 65536 | |
| UK-MICROSOFT-19870528 | ||||
| 128.251.0.0 — 128.251.255.255 | United Kingdom | 128.251.0.0/16 | 65536 | |
| UK-MICROSOFT-20030205 | ||||
| 135.13.0.0 — 135.13.255.255 | United Kingdom | 135.13.0.0/16 | 65536 | |
| UK-MICROSOFT-19911226 | ||||
| 149.204.0.0 — 149.204.255.255 | United Kingdom | 149.204.0.0/16 | 65536 | |
| UK-MICROSOFT-19960202 | ||||
| 194.238.128.0 — 194.238.255.255 | United Kingdom | 194.238.128.0/17 | 32768 | |
| UK-MICROSOFT-19990512 | ||||
| 212.173.0.0 — 212.173.127.255 | United Kingdom | 212.173.0.0/17 | 32768 | |
| UK-MICROSOFT-20000911 | ||||
| 213.199.128.0 — 213.199.191.255 | United Kingdom | 213.199.128.0/18 | 16384 | |
| UK-MICROSOFT-20081107 | ||||
| 94.245.64.0 — 94.245.127.255 | United Kingdom | 94.245.64.0/18 | 16384 | |
| MSNUK-NET | ||||
| 193.149.64.0 — 193.149.95.255 | To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to: * https://cert.microsoft.com. For SPAM and other abuse issues, such as Microsoft Accounts, please contact: * abuse@microsoft.com. To report security vulnerabilities in Microsoft products and services, please contact: * secure@microsoft.com. For legal and law enforcement-related requests, please contact: * msndcc@microsoft.com For routing, peering or DNS issues, please contact: * IOC@microsoft.com | United Kingdom | 193.149.64.0/19 | 8192 |
| 194.69.96.0 — 194.69.127.255 | United Kingdom | 194.69.96.0/19 | 8192 | |
| UK-MICROSOFT-19981119 | ||||
| 212.132.0.0 — 212.132.31.255 | United Kingdom | 212.132.0.0/19 | 8192 | |
| MSFT-IDC | ||||
| 213.199.144.0 — 213.199.159.255 | Microsoft EMEA Data Center Distribution of Microsoft content | Ireland | 213.199.144.0/20 | 4096 |
| VEXCEL-NET | ||||
| 193.46.249.0 — 193.46.249.255 | former Vexcel Imaging GmbH | Austria | 193.46.249.0/24 | 256 |
| MICROSOFT-LIVE-MEETING | ||||
| 193.221.113.0 — 193.221.113.255 | United Kingdom | 193.221.113.0/24 | 256 | |
| 194.110.197.0 — 194.110.197.255 | United Kingdom | 194.110.197.0/24 | 256 | |
| Net-GB-MICROSOFT-LIMITED | ||||
| 80.169.12.208 — 80.169.12.215 | MICROSOFT LIMITED | United Kingdom | 80.169.12.208/29 | 8 |
| 213.86.15.40 — 213.86.15.47 | MICROSOFT LIMITED | United Kingdom | 213.86.15.40/29 | 8 |
| 80.169.132.224 — 80.169.132.231 | MICROSOFT LIMITED | United Kingdom | 80.169.132.224/29 | 8 |
| UK-MICROSOFT-20100303 | ||||
| 2a00:1c68:: — 2a00:1c6f:ffff:ffff:ffff:ffff:ffff:ffff | United Kingdom | 2a00:1c68::/29 | 299 | |
| UK-MICROSOFT-20060601 | ||||
| 2a01:110:: — 2a01:111:ffff:ffff:ffff:ffff:ffff:ffff | United Kingdom | 2a01:110::/31 | 297 | |
| MICROSOFT-EMEA-ECN | ||||
| 2001:67c:1020:: — 2001:67c:1021:ffff:ffff:ffff:ffff:ffff | Austria | 2001:67c:1020::/47 | 281 | |
