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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
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 | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
| 3.3K |
| 65.5K |
| 9 |
| AS47563GB | SIS-AS Sports Information Services Limited | 3.3K | — | 5 |
| AS44332GB | ASN-CENTRILOGIC-UK Centrilogic Ltd | 3.3K | 589.8K | 5 |
| AS39097GB | MAINTEL-LTD-UK Maintel Europe Limited | 3.3K | — | 13 |
| AS21339GB | ContingencyNetworks Contingency Networks Ltd | 3.3K | — | 7 |
| AS198037GB | SPACECORE SPACECORE SOLUTION LTD | 3.3K | 12.3K | 18 |
| AS39175GB | CONNECTIVE Connective Online Limited | 3.3K | 524.3K | 7 |
| AS200514GB | KnownSRV KnownSRV Ltd. | 3.3K | — | 13 |
| AS203758GB | EUGameHost-LTD EUGAMEHOST LTD | 3.3K | — | 13 |
| AS52200GB | M5-AS M5 Limited | 3.1K | — | 3 |
| AS200083GB | SUB6 Sub 6 Limited | 3.1K | 65.5K | 3 |
| AS200675GB | HYDRO66 NORTHERN DATA SERVICES (UK) LIMITED | 3.1K | 524.3K | 4 |
| AS206626GB | PSDGroup-AS Professional Software Design Ltd | 3.1K | — | 8 |
| AS47625GB | UKHOST4U Paul David Hughes | 3.1K | — | 6 |
| AS59659GB | SECURUS Securus Communications Ltd. | 3.1K | 524.3K | 3 |
| AS212694GB | AST_INTEGRA Applied Satellite Technology Ltd | 3.1K | — | 2 |
| AS58246GB | LothianBroadband Highland Broadband Networks Limited | 3.1K | 524.3K | 4 |
| AS210099GB | TIGOVA TIGOVA NETWORK LIMITED | 3.1K | — | 12 |
| AS51707GB | INNOVATION-CENTRE-MEDWAY-ASN Medway Towns Council | 3.1K | — | 3 |
| AS49229GB | ANS-GROUP-AS ANS Group Limited | 3.1K | — | 12 |
| AS214927GB | PSB-AS PSB HOSTING LTD | 3.1K | 2 | 14 |
| AS60241GB | HUBS-EDIN High-Speed Universal Broadband Services C.I.C. | 3.1K | 524.3K | 4 |
| AS5459GB | LINX-AS London Internet Exchange Ltd. | 3.1K | 65.5K | 4 |
| AS216039GB | AntiDDoS-pw EdgeSec Technologies Limited | 3.1K | 1 | 13 |
| AS33967GB | GB-LANCSCC Lancashire County Council | 3.1K | — | 3 |
| AS48463GB | TRADITIONGROUP Tradition Financial Services Ltd. | 3.1K | — | 8 |
| AS39846GB | ONEGA Onega Ltd | 3.1K | — | 5 |
| AS39730GB | EIRCOM-UK Eircom (UK) Ltd | 3.1K | 524.3K | 3 |
| AS39382GB | OPTINIUMWH-AS Optinium Ltd | 3.1K | — | 2 |
| AS206237GB | BARCLAYS_BPS Barclays Bank PLC | 3.1K | — | 7 |
| AS8356GB | NEOTEL-UK PRT Systems Limited | 3.1K | 65.5K | 3 |
| AS60542GB | NEXT Next Internet Network Ltd | 3.1K | — | 12 |
| AS197651GB | THEHUTGROUPLIMITED FIC SHARECO LIMITED | 3.1K | — | 6 |
| AS28863GB | Thales-SCS Thales UK Limited | 3.1K | — | 5 |
| AS203067GB | Giacom GIACOM (CLOUD) LIMITED | 3.1K | — | 9 |
| AS51409GB | SIPSYNERGY sipsynergy Ltd | 3.1K | — | 12 |
| AS25462GB | RETN-UA-AS RETN Limited | 3.1K | — | 2 |
| AS43463GB | BST-LT INFOCOM UK LTD | 3.1K | 256 | 10 |
| AS44205GB | INDIGOICS Indigo Integrated Solutions Limited | 3.1K | 1.6M | 6 |
| AS209326GB | CF-001 AMPHORA TRADING LTD | 3.1K | — | 12 |
| AS213990GB | AOFB AOFB Telecom Networks Ltd | 3.1K | — | 12 |
| AS29575GB | LONDSTOCK-AS London Stock Exchange PLC | 3.1K | — | 7 |
| AS31256GB | WARWICKSHIRECC Warwickshire County Council | 3.1K | — | 2 |
| AS57907GB | CLOUDCONNX CloudConnX Limited | 3.1K | 524.3K | 3 |
| AS201855GB | uk-as-raymondjames RAYMOND JAMES INVESTMENT SERVICES LIMITED | 3.1K | — | 7 |
| AS52063GB | SYSTEMIP TTP Cloud Group Ltd | 3.1K | 65.5K | 3 |
| AS208949GB | hbing-as HBING LIMITED | 2.8K | — | 10 |