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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 |
| — |
| 256 |
| 1 |
| AS204946GB | GUFFNET ABSOLUTE GUFF LTD | — | 1 | 1 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS197166GB | GOTSCHNA-AS Gotschna Limited | — | 2 | 2 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS202751GB | BGP_AS Christopher Edwards | — | 1 | 1 |
| AS213436GB | NIUZI_DADA_CLOUD NIUZI DADA CLOUD LIMITED | — | 1K | 1 |
| AS214731GB | ETO-AS ETO Networks Limited | — | 601 | 41 |
| AS200707GB | APPMAIL Integrated Digital Services Ltd | — | 65.5K | 1 |
| AS199794GB | EMO-AS EMOCLOUD LTD | — | 528 | 3 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS203504GB | Tomas-Freitas-Fernandes Tomas Freitas Fernandes | — | 3 | 3 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS202194GB | HORDEN-ENGINEERING Horden Engineering Limited | — | 1 | 1 |
| AS204293GB | TinyHomeLab TinyHomeLab Ltd | — | 1 | 1 |
| AS211879GB | NJRYCE Nicholas Ryce | — | 1 | 1 |
| AS214749GB | PAW James Cahill | — | 6 | 6 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 594 | 20 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 272 | 2 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS214931GB | ALUE-NET ALUE NETWORK LIMITED | — | 1 | 1 |
| AS203054GB | ORG-TCL96-RIPE TownFibre Connect Ltd | — | 1 | 1 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS210985GB | BISHOP Christopher Bishop | — | 2 | 2 |
| AS210961GB | SIGN4 Nathan York | — | 1 | 1 |
| AS214242GB | Jx Jiaxing Xing | — | 519 | 9 |
| AS57110GB | AARAN-CLOUD-AS Aaran Perry | — | 257 | 2 |
| AS49134GB | AS_10VPN 10VPN Research Network LTD | — | 22 | 4 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS207427GB | IBILLY-MEDIA-GROUP-LTD IBILLY MEDIA GROUP LTD | — | 1 | 1 |
| AS215332GB | SNIFF122-AS Lewis Foster | — | 1 | 1 |
| AS209565GB | JIANYUELAB-STAFF JIANYUELAB LTD | — | 2 | 2 |
| AS142290GB | AGARTHATELEKOMLTD-AS-AP - AGARTHA TELEKOM LTD | — | 1 | 1 |
| AS200493GB | WHITEQUARK-AS Ekaterina Zotova | — | 1 | 1 |
| AS198174GB | VEAN-AS Vean Networks Ltd | — | 1 | 1 |
| AS200299GB | BASESERV-AS BaseServ Limited | — | 1 | 1 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS213507GB | SKYQUANTUM-TELECOM SKYQUANTUM TELECOM LTD. | — | 950.3K | 29 |
| AS200279GB | DOUWES-NET Thomas Douwes | — | 18 | 3 |
| AS216364GB | uk-globalreachtech Global Reach Technology EMEA Limited | — | 8.2K | 2 |
| AS197378GB | ZYME Zyme Limited | — | 1 | 1 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS204291GB | pinguin Thomas McLoughlin | — | 337 | 7 |
| AS202615GB | ECHO Inspect Element Ltd | — | 2 | 2 |
| AS209606GB | BEYONDORBIT Beyond Orbit Ltd. | — | 3 | 3 |