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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 |
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| AS213434GB | GALACTIX Rhys Woolcott | — | 17 | 2 |
| AS212711GB | NETSPAWN Daniel Terrence Thorpe | — | — | 0 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS8656GB | PSINetEurope TELSTRA UK LIMITED | — | — | 0 |
| AS208051GB | SR2COM SR2 Communications Limited | — | 32 | 2 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS134458GB | EDGENAP1-AS-AP - EDGENAP LTD | — | — | 0 |
| AS199208GB | EY-DE-NGDC-2 EY Global Services Limited | — | — | 0 |
| AS205383GB | PERRYNET Rhys Perry | — | 1 | 1 |
| AS202762GB | INFERNO-EVENTS Inferno Communications Ltd | — | — | 0 |
| AS207756GB | capstoneco Capstone Investment Advisors (UK), LLP | — | — | 0 |
| AS213989GB | DesignedBy-Scot Scott Luty | — | — | 0 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS48910GB | INAP-FRA PACKETFABRIC (UK) LTD | — | — | 0 |
| AS31398GB | NEC-EU-AS NEC Europe LTD | — | — | 0 |
| AS43006GB | DIGITAL-REALTY-IE Digital Realty (UK) Limited | — | — | 0 |
| AS48071GB | NORTHCOTE-AS Northcote Internet Limited | — | — | 0 |
| AS48562GB | EQUINIX-CLOUD-EXCHANGE-DUBAI-ASN EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS64485GB | ST-UK Mitel Networks Limited | — | — | 0 |
| AS153833GB | GCXGINDIAPRIVATELIMITED-AS-IN - GCXG INDIA PRIVATE LIMITED | — | — | 0 |
| AS199185GB | PLUSLAYER PLUSLAYER TECHNOLOGIES LTD | — | — | 0 |
| AS201941GB | SWANN-AS NHS National Services Scotland | — | — | 0 |
| AS29026GB | CTAYLOR-AS CHARLES TAYLOR LIMITED | — | — | 0 |
| AS205468GB | GAM-UK-LTD GAM (U.K.) Limited | — | — | 0 |
| AS205897GB | HOSTOWEB HOSTOWEB LTD | — | — | 0 |
| AS206144GB | NA-Transit Clouvider Limited | — | — | 0 |
| AS211097GB | EASYGO-AS EASYGO SOLUTIONS LP | — | — | 0 |
| AS216179GB | NATE-BILL Nathaniel Bill | — | — | 0 |
| AS218903GB | VANDRIQ VANDRIQ LTD | — | — | 0 |
| AS20500GB | GRIFFIN GTT - EMEA Ltd. | — | — | 0 |
| AS218776GB | FULLFIBER FULLFIBER LTD | — | 4 | 4 |
| AS15421GB | INAP-PAR PACKETFABRIC (UK) LTD | — | — | 0 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS219541GB | STAUS-AS STAUS LTD | — | — | 0 |
| AS219457GB | Zephyrbash-Labs Evan Galvin | — | — | 0 |
| AS218818GB | WBTECH WB TECH SYSTEMS LTD | — | — | 0 |
| AS212857GB | fibreway Fibreway Limited | — | — | 0 |
| AS211789GB | eVerify-Ltd EVERIFY Limited | — | — | 0 |
| AS200104GB | crow PETALDATA LTD | — | 1 | 1 |
| AS199172GB | FAST-BITS-AS Fast Bits Limited | — | — | 0 |
| AS61126GB | ROUTED Lee Valentine | — | 3 | 3 |
| AS60714GB | TELNA-UK TELNA (UK) LTD | — | — | 0 |
| AS218843GB | OMNIVISION-INTERNET-GATEWAY Omnivision Solutions Ltd | — | 338 | 8 |
| AS34934GB | UKFast ANS ACADEMY LIMITED | — | — | 0 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS218726GB | Bym-Networks BYM SYSTEMS LTD | — | — | 0 |