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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United Kingdom over time.
The largest autonomous systems registered to United Kingdom by IPv4 footprint.
United Kingdom against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
3,134 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 173 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,290 |
| — |
| 6 |
| 6 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 17 | 2 |
| AS51805GB | cantab Gam Systematic LLP | — | — | 0 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS205383GB | PERRYNET Rhys Perry | — | 1 | 1 |
| AS8276GB | VONESERVICES Vone Services Ltd | — | — | 0 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |
| AS204994GB | BAHAMUT-ZONE Luke Seabrook | — | 1 | 1 |
| AS211209GB | EUROPEANEDGE-IX AIRBYTES COMMUNICATIONS Limited | — | — | 0 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS202776GB | Moeclub MOECLUB LTD | — | 7 | 7 |
| AS200365GB | Possibly-Lizards Possibly Lizards Limited | — | 257 | 2 |
| AS202489GB | SDHL Shop Direct Holdings Limited | — | — | 0 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS203504GB | Tomas-Freitas-Fernandes Tomas Freitas Fernandes | — | 2 | 2 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS211789GB | eVerify-Ltd EVERIFY Limited | — | — | 0 |
| AS48562GB | EQUINIX-CLOUD-EXCHANGE-DUBAI-ASN EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS48071GB | NORTHCOTE-AS Northcote Internet Limited | — | — | 0 |
| AS61126GB | ROUTED Lee Valentine | — | 3 | 3 |
| AS43006GB | DIGITAL-REALTY-IE Digital Realty (UK) Limited | — | — | 0 |
| AS31398GB | NEC-EU-AS NEC Europe LTD | — | — | 0 |
| AS29026GB | CTAYLOR-AS CHARLES TAYLOR LIMITED | — | — | 0 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS15421GB | INAP-PAR PACKETFABRIC (UK) LTD | — | — | 0 |
| AS219541GB | STAUS-AS STAUS LTD | — | — | 0 |
| AS219457GB | Zephyrbash-Labs Evan Galvin | — | — | 0 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS218818GB | WBTECH WB TECH SYSTEMS LTD | — | — | 0 |
| AS212857GB | fibreway Fibreway Limited | — | — | 0 |
| AS41614GB | TELEDESIGN-AS Teledesign Solutions Ltd | — | — | 0 |
| AS200104GB | crow PETALDATA LTD | — | 1 | 1 |
| AS218843GB | OMNIVISION-INTERNET-GATEWAY Omnivision Solutions Ltd | — | 338 | 8 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS44754GB | SPACEMINE-AS SpaceMine Ltd | — | 1 | 1 |
| AS200493GB | WHITEQUARK-AS Ekaterina Zotova | — | 1 | 1 |
| AS218839GB | ZONEKTELECOM-AS ZONEK TELECOM LTD | — | 11 | 11 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 573 | 14 |
| AS209600GB | AS209600 Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS43336GB | ASPIXIE PIXIE NETWORKS LTD | — | 524.3K | 1 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 2 | 2 |
| AS25085GB | ALUE-NET ALUE LTD | — | 10 | 10 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |