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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 |
| 3.1K |
| — |
| 5 |
| AS60241GB | HUBS-EDIN High-Speed Universal Broadband Services C.I.C. | 3.1K | 524.3K | 4 |
| AS52200GB | M5-AS M5 Limited | 3.1K | — | 3 |
| AS57907GB | CLOUDCONNX CloudConnX Limited | 3.1K | 524.3K | 3 |
| AS31256GB | WARWICKSHIRECC Warwickshire County Council | 3.1K | — | 2 |
| AS213990GB | AOFB AOFB Telecom Networks Ltd | 3.1K | — | 12 |
| AS212194GB | Yuusei YUUSEI LTD | 3.1K | 3 | 10 |
| AS206715GB | UXHOST UXHOST LTD | 3.1K | 19 | 16 |
| AS48463GB | TRADITIONGROUP Tradition Financial Services Ltd. | 3.1K | — | 8 |
| AS208949GB | hbing-as HBING LIMITED | 3.1K | — | 11 |
| AS44205GB | INDIGOICS Indigo Integrated Solutions Limited | 3.1K | 1.6M | 6 |
| AS51409GB | SIPSYNERGY Sipsynergy Limited | 3.1K | — | 12 |
| AS5459GB | LINX-AS London Internet Exchange Ltd. | 3.1K | 65.5K | 4 |
| AS212396GB | FYFEWEB FyfeWeb Ltd | 3.3K | 3 | 16 |
| AS44226GB | acturis Acturis Ltd | 3.3K | — | 6 |
| AS200514GB | KnownSRV KnownSRV Ltd. | 3.3K | — | 13 |
| AS219064GB | Akenai-Products-AS Akenai Products LTD | 3.3K | 6 | 17 |
| AS21339GB | ContingencyNetworks Contingency Networks Ltd | 3.3K | — | 7 |
| AS49546GB | VOICETEC-AS Voicetec sys Limited | 3.3K | — | 7 |
| AS51945GB | Enlink Enlink Ltd | 3.3K | 65.5K | 6 |
| AS50056GB | VORBOSS-ORIG Vorboss Limited | 3.3K | — | 13 |
| AS31474GB | MTV-UK-AS Viacom International Media Networks U.K. Limited | 3.3K | — | 12 |
| AS204260GB | RoS Registers of Scotland | 3.3K | — | 11 |
| AS203516GB | AltunHOST AltunHOST LTD | 3.3K | 1 | 14 |
| AS210920GB | CIVO-FRANKFURT Civo LTD | 3.3K | — | 3 |
| AS61414GB | EDGENAP EDGENAP LTD | 3.3K | 1 | 14 |
| AS30933GB | PROTEXIA-EU KDA WEB SERVICES LTD | 3.3K | — | 6 |
| AS39458GB | REALHOSTS-AS Real Hosts Limited | 3.3K | 65.5K | 4 |
| AS16349GB | FON-AS-2 Fon Wireless LTD | 3.3K | 65.5K | 9 |
| AS39097GB | MAINTEL-LTD-UK Maintel Europe Limited | 3.3K | — | 13 |
| AS48825GB | fast2host Fast4networks Ltd | 3.3K | 65.5K | 4 |
| AS44646GB | Gamesys-NET Gamesys Ltd. | 3.3K | — | 13 |
| AS198328GB | TRAYPORT-AS Trayport Limited | 3.3K | 655.4K | 10 |
| AS207045GB | wyless_asn_1 KORE WIRELESS UK LIMITED | 3.6K | — | 8 |
| AS57168GB | ICH-AS Amito Ltd | 3.6K | — | 9 |
| AS204413GB | HYVE-UK Hyve Ltd | 3.6K | 4 | 10 |
| AS42705GB | Talia Talia Limited | 3.6K | — | 14 |
| AS41847GB | STEALTH-NETWORKS Daniel O'Mahony | 3.6K | 1 | 10 |
| AS41362GB | BGNET Royal London Management Services Limited | 3.6K | — | 13 |
| AS207567GB | INTEZIONET-AS Intezio Worldwide Limited | 3.6K | 2 | 16 |
| AS47563GB | SIS-AS Sports Information Services Limited | 3.6K | — | 6 |
| AS211612GB | cache77 Datacamp Limited | 3.6K | 66.1K | 12 |
| AS39175GB | CONNECTIVE Connective Online Limited | 3.6K | 524.3K | 8 |
| AS35707GB | Scottish-Power-PLC Scottish Power UK PLC | 3.6K | — | 5 |
| AS43013GB | YorkDataServices Communicate Technology LTD | 3.6K | — | 3 |
| AS57148GB | TBSH-CLIENT-TRISTAR-BYTEHOUSE Bytehouse Ltd | 3.6K | — | 5 |
| AS39884GB | VOIPFONE-AS iNet Telecoms Ltd | 3.6K | — | 3 |