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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 | 4,229 |
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| AS198617GB | PrenHost PrenHost Ltd | — | — | 0 |
| AS199501GB | RFLNHS Royal Free Hospital | — | — | 0 |
| AS202818GB | Level3Communications Lumen Technologies UK Limited | — | — | 0 |
| AS204078GB | scylla David Tagg-Oram | — | — | 0 |
| AS205749GB | Intelligent-Communitycations-125-Ltd INTELLIGENT COMMUNITYCATIONS 125 LTD | — | — | 0 |
| AS200143GB | KWZTECH KWZ Technologies Ltd. | — | — | 0 |
| AS6749GB | DEMON-INTERNET Vodafone Limited | — | — | 0 |
| AS214749GB | PAW James Cahill | — | 7 | 7 |
| AS43157GB | URBANWIMAX-NET Telcom Networks Limited | — | — | 0 |
| AS57114GB | DEDISHACK Dedishack Ltd | — | — | 0 |
| AS59839GB | BROMLEYNET Bromleynet Limited | — | — | 0 |
| AS200104GB | crow PETALDATA LTD | — | 1 | 1 |
| AS214409GB | ZEKTRA-AS Robotic Node LTD | — | — | 0 |
| AS214705GB | Jamf JAMF LTD | — | — | 0 |
| AS218703GB | Tempest TEMPEST OPERATIONS UK LTD | — | — | 0 |
| AS219022GB | FREEVPN FREE VPN GLOBAL LTD | — | — | 0 |
| AS219189GB | CLNEXUS CLNexus LTD | — | — | 0 |
| AS8844GB | COMMUNITY GTT - EMEA Ltd. | — | — | 0 |
| AS16755GB | The-London-Metal-Exchange The London Metal Exchange | — | — | 0 |
| AS202355GB | CIALLO-AS Ciallo Networks LTD | — | 256 | 1 |
| AS199349GB | SphereDent-AS SphereDent LTD | — | — | 0 |
| AS59529GB | CME-AS-LO2-1 CME Operations Limited | — | — | 0 |
| AS200365GB | Possibly-Lizards Possibly Lizards Limited | — | 257 | 2 |
| AS61977GB | PATH-GLOBAL-UK-LIMITED Path Global UK Limited | — | — | 0 |
| AS199875GB | EA-ES-MAD Electronic Arts Limited | — | — | 0 |
| AS207602GB | EA-CH-GENEVA Electronic Arts Limited | — | — | 0 |
| AS219311GB | wavemobile Wave Mobile Ltd | — | — | 0 |
| AS34158GB | BBC-RD-NONUK-AS BBC | — | — | 0 |
| AS15421GB | INAP-PAR PACKETFABRIC (UK) LTD | — | — | 0 |
| AS34846GB | ccore-as NEWS CORP UK & IRELAND LIMITED | — | — | 0 |
| AS42271GB | VANCO-UK-AS3 Flag Telecom UK Limited | — | — | 0 |
| AS44981GB | Oosha Oosha Ltd | — | — | 0 |
| AS8835GB | VITRIFI Vitrifi Limited | — | — | 0 |
| AS197677GB | BENWELL-AS Mr David John Benwell | — | — | 0 |
| AS197872GB | EA-NL-AMSTERDAM_DC Electronic Arts Limited | — | — | 0 |
| AS197976GB | FAVBET-AS Favbet Invest LLP | — | — | 0 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS201164GB | Cool-Studio Cool Studio Limited | — | — | 0 |
| AS206036GB | DRT-EXCHANGE Digital Realty (UK) Limited | — | — | 0 |
| AS206509GB | KCOM-UK-AS KCOM Group Limited | — | — | 0 |
| AS211658GB | STRATUS_AS Unity World Ltd | — | — | 0 |
| AS212404GB | Integral Jones Lang LaSalle Ltd | — | — | 0 |
| AS39553GB | BLUEPRINTGAMING Blueprint Gaming Ltd. | — | — | 0 |
| AS206877GB | SharedGrid SharedGrid Ltd | — | 1 | 1 |
| AS8802GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS21493GB | PKXGEU GTT - EMEA Ltd. | — | — | 0 |