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Cumulative IPv4, IPv6, and ASN allocations to United Kingdom over time.
Share of announced address space covered by valid Route Origin Authorizations.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| 7.1M |
| 2.8M |
| 81 |
| AS786GB | JANET - Jisc Services Limited | 7M | 1.7M | 219 |
| AS5378GB | Vodafone Limited | 2.8M | 524.3K | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 598K | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 393.2K | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 148K | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 2.8M | 100 |
| AS212238GB | CDNEXT Datacamp Limited | 894K | 35.4M | 3,654 |
| AS5413GB | Wavenet-AS5413 Wavenet Limited | 740.1K | 1.1M | 106 |
| AS5400GB | BT British Telecommunications PLC | 727.8K | 60M | 109 |
| AS8851GB | EDGE GCI Network Solutions Limited | 621.6K | 1.3M | 224 |
| AS31655GB | ASN-GammaTelecom Gamma Telecom Holdings Ltd | 614.4K | 1.6M | 39 |
| AS3300GB | BT British Telecommunications PLC | 603.1K | 195.6K | 150 |
| AS30844GB | LIQUID-AS Liquid Telecommunications Ltd | 542.5K | 671.7K | 301 |
| AS13037GB | ZEN-AS Zen Internet Ltd | 527.6K | 524.3K | 38 |
| AS42689GB | Glide Glide Student & Residential Limited | 502.5K | 1.6M | 317 |
| AS20860GB | IOMART-AS IOMART CLOUD SERVICES LIMITED | 423.7K | 1.2M | 228 |
| AS15395GB | RACKSPACE-LON Rackspace Ltd. | 403.2K | 65.5K | 34 |
| AS62240GB | Clouvider Clouvider Limited | 369.9K | 4.7M | 2,484 |
| AS8468GB | ENTANET Cityfibre Limited | 360.2K | 1.1M | 50 |
| AS25180GB | EXPONENTIAL-E-AS Exponential-E Ltd. | 293.4K | 593.9K | 49 |
| AS15914GB | British Airways plc | 288.3K | — | 95 |
| AS35228GB | O2BROADBAND Telefonica UK Limited | 283.1K | 1.1K | 117 |
| AS8698GB | NATIONWIDE BUILDING SOCIETY | 262.1K | — | 109 |
| AS12390GB | KINGSTON-UK-AS KCOM Group Limited | 260.1K | 131.1K | 20 |
| AS201838GB | ASN-COMMUNITYFIBRE Community Fibre Limited | 238.3K | 1.1M | 104 |
| AS25310GB | ASN-CWACCESS Vodafone Limited | 229.4K | — | 4 |
| AS56478GB | BCUBE-AS Hyperoptic Ltd | 219.1K | 77.8K | 98 |
| AS8607GB | TIMICO Digital Space Group Limited | 205.6K | 720.9K | 24 |
| AS12703GB | PULSANT-AS Pulsant (Scotland) Ltd | 180K | 393.2K | 64 |
| AS13213GB | UK2NET-AS THG HOSTING LIMITED | 155.6K | 33K | 209 |
| AS47474GB | Virtual1 Virtual1 Limited | 153.3K | 65.5K | 17 |
| AS20712GB | AS20712 Andrews & Arnold Ltd | 147.2K | 86K | 91 |
| AS15404GB | COLT Technology Services Group Limited | 147.2K | 69.6K | 160 |
| AS21054GB | UK-NATWEST-AS21054 Natwest Markets PLC | 134.4K | — | 13 |
| AS198864GB | QMW-AC-UK Queen Mary University of London | 132.9K | 65.6K | 7 |
| AS42831GB | UKSERVERS-AS UK Dedicated Servers Limited | 132.9K | 721.2K | 340 |
| AS209237GB | NPL-MANG-LTD NPL Management LTD | 131.6K | — | 4 |
| AS8651GB | MUSI MUFG Securities EMEA PLC | 131.1K | — | 9 |
| AS60068GB | CDN77 Datacamp Limited | 125.4K | 19.2K | 486 |
| AS49758GB | LLOYDSBANKING Lloyds Banking Group PLC | 122.4K | — | 38 |
| AS41230GB | ASK4 ASK4 Limited | 122.1K | 3.7M | 23 |
| AS5587GB | ITILITY-LIMITED Itility Limited | 121.9K | 524.3K | 14 |
| AS25369GB | BANDWIDTH-AS Hydra Communications Ltd | 120.1K | 655.9K | 221 |
| AS6908GB | DATAHOP Six Degrees Technology Group Limited | 112.9K | 786.4K | 48 |
| AS56329GB | GIGACLEAR Gigaclear Limited | 110.6K | 1.1M | 34 |
| AS8586GB | OBSL-AS TalkTalk Communications Limited | 108K | 65.5K | 17 |