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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.
3,132 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 | 369 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,286 |
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| AS199269GB | UK-ARDENTA-ASN Claranet Limited | — | — | 0 |
| AS198536GB | LUDIC-LABS Bekalu Terefe | — | — | 0 |
| AS202944GB | IXLIV IX Liverpool Limited | — | — | 0 |
| AS35736GB | WUK-AS EE Limited | — | — | 0 |
| AS197239GB | ClearNet HYPERLXC MEDICAL LTD | — | 1 | 1 |
| AS44008GB | RBKC Royal Borough of Kensington and Chelsea | — | — | 0 |
| AS39295GB | SWIP-AS Southern Communications Ltd | — | — | 0 |
| AS218815GB | PKTECHGURUS PK TECH GURUS LTD | — | — | 0 |
| AS31665GB | INVESCO-AS Invesco UK Ltd | — | — | 0 |
| AS60710GB | NCL-IX-RS Stellium Networks Limited | — | — | 0 |
| AS8718GB | Refinitiv Limited | — | — | 0 |
| AS59705GB | POBOX2-AS Acora Limited | — | — | 0 |
| AS202751GB | BGP_AS Christopher Edwards | — | 1 | 1 |
| AS214116GB | AcoraAPC2-AS Acora Limited | — | — | 0 |
| AS216217GB | baltic Baltic Networks Limited | — | — | 0 |
| AS213854GB | RESURE RE:SURE INTELLIGENCE LTD | — | — | 0 |
| AS215323GB | SGM SGM STUDIOS LTD | — | — | 0 |
| AS42271GB | VANCO-UK-AS3 Flag Telecom UK Limited | — | — | 0 |
| AS2529GB | DEMON-INTERNET - IDDQD-AS | — | — | 0 |
| AS212885GB | UK-NATWEST-AS212885 Natwest Markets PLC | — | — | 0 |
| AS212404GB | Integral Jones Lang LaSalle Ltd | — | — | 0 |
| AS210396GB | broadwaypartners Voneus Ltd | — | — | 0 |
| AS25041GB | AWS-DX British Telecommunications Limited | — | — | 0 |
| AS219494GB | HACKWORTH_UK_2 Hackworth Ltd | — | 1 | 1 |
| AS201762GB | RBK-AS Royal Borough of Kingston Council | — | — | 0 |
| AS200174GB | AS_WISPEED Wispeed LTD | — | — | 0 |
| AS201258GB | CRYPTIDZ Chaos Cupit | — | — | 0 |
| AS198653GB | SOLARAPPS-AS SOLARAPPS LTD | — | — | 0 |
| AS198382GB | FIRSTEASY-AS Teledata UK Limited | — | — | 0 |
| AS60899GB | ATECHMEDIA-AS Krystal Hosting Ltd | — | — | 0 |
| AS197595GB | SEEKAHOST-TECH SEEKAHOST TECHNOLOGIES LTD | — | — | 0 |
| AS44754GB | SPACEMINE-AS SpaceMine Ltd | — | 1 | 1 |
| AS208886GB | RIPL-AS Rhodes Island Pharmaceutical Ltd | — | — | 0 |
| AS35143GB | BICOMDOO Bicom Systems Limited | — | — | 0 |
| AS39139GB | Menzies-Aviation-PLC-AS Menzies Aviation Plc | — | — | 0 |
| AS8276GB | VONESERVICES Vone Services Ltd | — | — | 0 |
| AS5519GB | Wavenet-AS5519 Wavenet Limited | — | — | 0 |
| AS212475GB | COMCAST-UK Comcast International Holdings UK Limited | — | — | 0 |
| AS216116GB | vivoenergy-as Vivo Energy Ltd | — | — | 0 |
| AS214242GB | Jx Jiaxing Xing | — | 519 | 9 |
| AS199507GB | THALES-DNSP Thales UK Limited | — | — | 0 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS207140GB | SKYENET Sleat Community Trust | — | — | 0 |
| AS201729GB | VALE-AS VALERUS LTD | — | — | 0 |
| AS201690GB | CallWithMe-AS CALLWITHME LTD. | — | — | 0 |
| AS208533GB | CSSUK Clear Street Services UK LTD | — | — | 0 |