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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 | 170 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 976.9K | 4,012 |
| — |
| 2 |
| 2 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS59893GB | FRC-AS Free Range Cloud Ltd. | — | 4 | 4 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 67 | 19 |
| AS199109GB | FruburyNet Guy Fenn-Newbury | — | 2 | 2 |
| AS212121GB | VAGUE James Ray | — | 4 | 4 |
| AS142290GB | AGARTHATELEKOMLTD-AS-AP - AGARTHA TELEKOM LTD | — | 1 | 1 |
| AS198174GB | VEAN-AS Vean Networks Ltd | — | 1 | 1 |
| AS204725GB | luna-frankland Luna Frankland | — | 2 | 2 |
| AS204345GB | STALLARD Timothy Stallard | — | 1 | 1 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS213729GB | RikkiNet Rikki Network Limited | — | 1 | 1 |
| AS207268GB | STREXP STRATEGIC EXPLORATIONS LTD | — | 24 | 6 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS200927GB | ProxyOmega ProxyOmega LTD | — | 65.5K | 1 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS207427GB | IBILLY-MEDIA-GROUP-LTD IBILLY MEDIA GROUP LTD | — | 1 | 1 |
| AS205648GB | VirgoCube_Limited VirgoCube Limited | — | 256 | 1 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 20 | 12 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS206000GB | HRE Harry Rowan Elenor | — | 258 | 3 |
| AS35545GB | Clouvider-Anycast Clouvider Limited | — | — | 0 |
| AS215413GB | PebbleHost-Protected PebbleHost Ltd | — | — | 0 |
| AS61245GB | lovehosting Yorkshire Tech Limited | — | — | 0 |
| AS49898GB | MYMIND BLOCZ IO LIMITED | — | — | 0 |
| AS25307GB | Equinix-Metro-Z EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS215905GB | AS_10VPN_ANYCAST 10VPN Research Network LTD | — | — | 0 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 17 | 17 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS61126GB | ROUTED Lee Valentine | — | 3 | 3 |
| AS200365GB | Possibly-Lizards Possibly Lizards Limited | — | 257 | 2 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 272 | 2 |
| AS216055GB | blue Wren Olivia Wood | — | 1 | 1 |
| AS49134GB | AS_10VPN 10VPN Research Network LTD | — | 22 | 4 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS215316GB | CLOUDAKA CLOUDAKA CLOUD PROVIDER LTD | — | — | 0 |
| AS213626GB | BIONIC-NETWORK Bionic.Network Ltd | — | 2 | 2 |
| AS210961GB | SIGN4 Nathan York | — | 1 | 1 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS208589GB | uk123lir ANT BM Limited | — | 1 | 1 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS214931GB | ALUE-NET ALUE NETWORK LIMITED | — | 1 | 1 |
| AS204660GB | Tiger-Technologies-Limited Tiger Technologies Limited | — | 1 | 1 |
| AS25085GB | ALUE-NET ALUE NETWORK LIMITED | — | 6 | 6 |