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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.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS5089GB | NTL Virgin Media Limited | 23M | 289 |
| AS2856GB | BT-UK-AS British Telecommunications Limited | 18.4M | 543 |
| AS13285GB | OPALTELECOM-AS TalkTalk Communications Limited | 7.7M | 99 |
| AS786GB | JANET - Jisc Services Limited | 7M | 219 |
| AS5607GB | BSKYB-BROADBAND-AS Sky UK Limited | 6.4M | 79 |
| 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 |
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.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS215619GB | RCD-AS RED COKE DEVELOPMENT LTD | — | 3 | 3 |
| AS213026GB | GWILKINSON George Wilkinson | — | 2 | 2 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS218758GB | CATBOY Lewis Brown | — | 17 | 2 |
| AS219127GB | risman RISMAN LIMITED | — | 524.3K | 1 |
| AS214018GB | IIC-AS INTERNET INTELLIGENCE COMPANY LTD | — | 1 | 1 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 4 | 4 |
| AS202751GB | BGP_AS Christopher Edwards | — | 1 | 1 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS202776GB | Moeclub MOECLUB LTD | — | 7 | 7 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS214749GB | PAW James Cahill | — | 7 | 7 |
| AS59893GB | FRC-AS Free Range Cloud Ltd. | — | 4 | 4 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS48987GB | JYANGNET Jiaxun Yang | — | 1 | 1 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |
| AS198557GB | ONETTL George French | — | 1 | 1 |
| AS50173GB | VTESSE GTT - EMEA Ltd. | — | 2 | 2 |
| AS214931GB | ALUE-NET ALUE LTD | — | 1 | 1 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS202355GB | CIALLO-AS Ciallo Networks LTD | — | 256 | 1 |
| AS199129GB | DIRECTCONNECT-AS Direct Connect (ISP) Ltd | — | 1 | 1 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS56758GB | CR0BAR Cr0bar Limited | — | 6 | 6 |
| AS205383GB | PERRYNET Rhys Perry | — | 1 | 1 |
| AS209808GB | LUKE Luke James | — | 64 | 1 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS198276GB | Lazuline Jordan Robert | — | 2 | 2 |
| AS204931GB | PNOSOLUTIONS-AS PNO Solutions Limited | — | 8 | 2 |
| AS215527GB | XERONET Xero Networks LTD | — | 7 | 7 |
| AS199804GB | TFES-AS THE FIRST EAST STAR LTD | — | 1 | 1 |
| AS200104GB | crow PETALDATA LTD | — | 1 | 1 |
| AS211879GB | NJRYCE Nicholas Ryce | — | 1 | 1 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS202194GB | HORDEN-ENGINEERING Horden Engineering Limited | — | 1 | 1 |
| AS216126GB | James-Ledger James Ledger | — | 13 | 13 |
| AS200299GB | BASESERV-AS BaseServ Limited | — | 1 | 1 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS198768GB | OASISINFO-AS OASIS INFOTECH LIMITED | — | 2 | 2 |
| AS205058GB | MAEEKO MAGICAL NETWORK LIMITED | — | 5 | 4 |
| AS208485GB | PINHOUSE-AS PINHOUSE LIMITED | — | 1 | 1 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |
| AS200671GB | START-AS START BUILDING LTD | — | 1 | 1 |