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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.
3,123 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications PLC | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 168 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 340 |
| AS212238GB | CDNEXT Datacamp Limited | 1M | 4,120 |
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| AS209600GB | LIVEFIXGROUP Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS44308GB | VAPOURMEDIA-AS Vapour Media Limited | — | — | 0 |
| AS203232GB | XENODE Xenode Ltd | — | — | 0 |
| AS42902GB | GLOBECONNECT Clouvider Limited | — | — | 0 |
| AS201930GB | ASN-TVAT VERTALA LTD | — | — | 0 |
| AS202631GB | LINX-GVPP London Internet Exchange Ltd. | — | — | 0 |
| AS201038GB | MPARA1 Matteo Paramatti | — | — | 0 |
| AS35736GB | WUK-AS EE Limited | — | — | 0 |
| AS12852GB | EASYNETES-AS GTT - EMEA Ltd. | — | — | 0 |
| AS198536GB | LUDIC-LABS Bekalu Terefe | — | — | 0 |
| AS58124GB | SIXDG-CSG Six Degrees Technology Group Limited | — | — | 0 |
| AS12755GB | COLT Technology Services Group Limited | — | — | 0 |
| AS203631GB | HedanCloud HEDAN LIMITED | — | — | 0 |
| AS46257GB | ATEX-ASN - Atex | — | — | 0 |
| AS43475GB | STFC-AS Science Technology Facilities Council | — | — | 0 |
| AS25346GB | Tiscali-AS TalkTalk Communications Limited | — | — | 0 |
| AS208576GB | aam-uk Arts Alliance Media Ltd | — | — | 0 |
| AS207663GB | PARKIN Paul Parkin | — | — | 0 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS8802GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS212931GB | OSCARMUSICRAND Oscar Music & Media Ltd. | — | — | 0 |
| AS212479GB | RaziNetwork RAZINETWORK LTD | — | — | 0 |
| AS209417GB | TIANHAI-EU Tianhai Infotech Ltd | — | — | 0 |
| AS208051GB | SR2COM SR2 Communications Limited | — | — | 0 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS201696GB | SHAMILNET Shamil Nunhuck | — | — | 0 |
| AS206792GB | ZACH Zachary Buller | — | 16 | 1 |
| AS201164GB | Cool-Studio Cool Studio Limited | — | — | 0 |
| AS60759GB | IAASRUN-EMEA-AS Netsapiens International Limited | — | — | 0 |
| AS59839GB | BROMLEYNET Bromleynet Limited | — | — | 0 |
| AS56739GB | DICO PRT Systems Limited | — | — | 0 |
| AS197595GB | SEEKAHOST-TECH SEEKAHOST TECHNOLOGIES LTD | — | — | 0 |
| AS62189GB | INNETRA-EU Elna Paulette Valentin trading as INNETRA PC | — | — | 0 |
| AS51805GB | cantab Gam Systematic LLP | — | — | 0 |
| AS44981GB | Oosha Oosha Ltd | — | — | 0 |
| AS49738GB | NETROX-AS 3nt solutions LLP | — | — | 0 |
| AS35143GB | BICOMDOO Bicom Systems Limited | — | — | 0 |
| AS34846GB | ccore-as NEWS CORP UK & IRELAND LIMITED | — | — | 0 |
| AS12554GB | EASYNET-BE GTT - EMEA Ltd. | — | — | 0 |
| AS197677GB | BENWELL-AS Mr David John Benwell | — | — | 0 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 272 | 2 |
| AS212177GB | AIRBYTES AIRBYTES COMMUNICATIONS Limited | — | — | 0 |
| AS211036GB | LSYS1 Nathan James | — | — | 0 |
| AS211284GB | JOSH_MILES Joshua Miles | — | — | 0 |
| AS198653GB | SOLARAPPS-AS SOLARAPPS LTD | — | — | 0 |
| AS202990GB | WEB42 Web42 Solutions Ltd | — | — | 0 |