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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 | 299 |
| AS2856GB | BT-UK-AS British Telecommunications Limited | 18.5M | 555 |
| AS13285GB | OPALTELECOM-AS TalkTalk Communications Limited | 7.7M | 99 |
| AS786GB | JANET Jisc Services Limited | 7.2M | 222 |
| AS5607GB | BSKYB-BROADBAND-AS Sky UK Limited | 6.9M | 80 |
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 172 |
| AS212238GB | CDNEXT Datacamp Limited | 1.2M | 4,613 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 404 |
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.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS199843GB | MINDTHECLOUD-AS Mindthecloud Ltd | — | — | 0 |
| AS198313GB | SystemHOST Systemhost Limited | — | — | 0 |
| AS49898GB | MYMIND BLOCZ IO LIMITED | — | — | 0 |
| AS47918GB | MCDEU03 MCD Europe Limited | — | — | 0 |
| AS50329GB | pbxhosting PBX Hosting Ltd | — | — | 0 |
| AS44874GB | VORBOSS-RD Vorboss Limited | — | — | 0 |
| AS29009GB | UKBROADBAND-AS UK Broadband Ltd. | — | — | 0 |
| AS213074GB | IPXO-Testing-ASN Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS206671GB | NotMike Michael Jones | — | — | 0 |
| AS218154GB | nexgen-eu3 NexGen Cloud Ltd | — | — | 0 |
| AS213201GB | AS213201 Mathew Philipps | — | — | 0 |
| AS211149GB | legendfibre Talk Straight Ltd. | — | — | 0 |
| AS210516GB | KARMACOMPUTING Karma Computing Ltd | — | — | 0 |
| AS211787GB | Rolosoft-Ltd Rolosoft Limited | — | — | 0 |
| AS202532GB | MBYTECHNOLOGY Mbytechnology Limited | — | — | 0 |
| AS201316GB | AIGLOBALMEDIALTD A.I. Global Media Ltd | — | — | 0 |
| AS12606GB | EASYNET-NL GTT - EMEA Ltd. | — | — | 0 |
| AS35788GB | Forcepoint-Cloud-AMER-AS Forcepoint UK Limited | — | — | 0 |
| AS208886GB | RIPL-AS Rhodes Island Pharmaceutical Ltd | — | — | 0 |
| AS208723GB | VDX-SYSTEMS VDX SYSTEMS LTD | — | — | 0 |
| AS206144GB | NA-Transit Clouvider Limited | — | — | 0 |
| AS203276GB | JAMINIT James Cook | — | — | 0 |
| AS208051GB | SR2COM SR2 Communications Limited | — | 16 | 1 |
| AS52076GB | ALGOSPAN-AS PICO GLOBAL LTD. | — | — | 0 |
| AS15636GB | COLLINGWOOD Collingwood Business Solutions Limited | — | — | 0 |
| AS199066GB | DATA8-AS Data8 Limited | — | — | 0 |
| AS204931GB | PNOSOLUTIONS-AS PNO Solutions Limited | — | 8 | 2 |
| AS61245GB | lovehosting Yorkshire Tech Limited | — | — | 0 |
| AS50162GB | AS50162-AS 3nt solutions LLP | — | — | 0 |
| AS49615GB | Ardmore-Construction-Limited Ardmore Construction Limited | — | — | 0 |
| AS213026GB | GWILKINSON George Wilkinson | — | 1 | 1 |
| AS48663GB | PORTFAST-NORTH Portfast Ltd | — | — | 0 |
| AS39530GB | parker James Parker | — | — | 0 |
| AS197360GB | HQ-24Ping-Ltd 24Ping Ltd. | — | — | 0 |
| AS211900GB | IN8INITY IN8INITY GLOBAL LIMITED | — | — | 0 |
| AS211108GB | RGA RGA UK SERVICES LIMITED | — | — | 0 |
| AS199227GB | Protocol7-IX JIANYUELAB LTD | — | — | 0 |
| AS197958GB | Ogilvie-Communications NET DEFENCE LIMITED | — | — | 0 |
| AS62249GB | NR-UK-AS Network Rail Infrastructure Limited | — | — | 0 |
| AS57155GB | COAST805-AS Contingency Networks Ltd | — | — | 0 |
| AS206925GB | CentralNic-GRX-A CentralNic Ltd | — | — | 0 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS199686GB | aaroncarson Aaron Carson | — | 18 | 3 |
| AS56533GB | NetCracker-AS Netcracker Technology EMEA Limited | — | — | 0 |
| AS52167GB | BANDWIDTH-USA Hydra Communications Ltd | — | — | 0 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS40986GB | YAHOO1-AS Yahoo-UK Limited | — | — | 0 |
| AS35433GB | Zzoomm Full Fibre Limited | — | — | 0 |
| AS31402GB | BlueSquare Rank Digital Limited | — | — | 0 |
| AS219526GB | Jakenet Jake Turner | — | 1 | 1 |