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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.
3,132 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 | 369 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,286 |
| 256 |
| — |
| 1 |
| AS209215GB | Moe-Network-LTD Moe Network Ltd | 256 | 16 | 2 |
| AS198353GB | MIMEO-AS Mimeo Limited | 256 | — | 1 |
| AS218950GB | VYTAL VYTAL TECHNOLOGY LTD | 256 | — | 1 |
| AS201831GB | ACTIVETRADES-AS ActivTrades Plc. | 256 | — | 1 |
| AS206457GB | EA-IE-GALWAY Electronic Arts Limited | 256 | — | 1 |
| AS198981GB | NETSHIELD-BYOIP NETSHIELD LTD | 256 | 4.1K | 2 |
| AS206512GB | TIGOVA TIGOVA NETWORK LIMITED | 256 | — | 1 |
| AS213272GB | BFC-SY3 Beeks Financial Cloud Ltd | 256 | — | 1 |
| AS207295GB | Akhtar Akhtar Technologies Limited | 256 | — | 1 |
| AS206939GB | YOSPACE Yospace Technologies Ltd | 256 | 1 | 2 |
| AS38936GB | HMUK-AS Herman Miller LTD | 256 | — | 1 |
| AS41548GB | MEDWAY-AS Medway Council | 256 | — | 1 |
| AS47367GB | TORBAY-AS Torbay Economic Development Company Limited | 256 | — | 1 |
| AS202615GB | ECHO Inspect Element Ltd | 256 | 1 | 2 |
| AS213119GB | ALZ-SOFTWARE-AS ALZ Software Ltd | 256 | — | 1 |
| AS211289GB | JOSH Joshua Leahy | 256 | 524.3K | 2 |
| AS215915GB | DEEPGREEN Deep Green Technologies Ltd | 256 | — | 1 |
| AS48632GB | BTS-HOLDINGS-PLC BTS HOLDINGS PLC | 256 | — | 1 |
| AS203001GB | GateX GateX LIMITED | 256 | — | 1 |
| AS49967GB | MTVH THAMES VALLEY HOUSING ASSOCIATION LIMITED | 256 | — | 1 |
| AS212788GB | edgenet Edge Network Technologies Ltd | 256 | — | 1 |
| AS202275GB | GTSUK-AS Gaming Technology Solutions Ltd. | 256 | 1 | 2 |
| AS205011GB | celertechuk Celer Technologies Limited | 256 | — | 1 |
| AS204757GB | ReactiveMarkets Reactive Markets Limited | 256 | — | 1 |
| AS210456GB | EastCostHosting EastCoastHost Ltd | 256 | — | 1 |
| AS213000GB | ASAML Alliance Medical Limited | 256 | — | 1 |
| AS47534GB | VocaLink-north-Ltd VOCALINK LTD | 256 | — | 1 |
| AS219522GB | PUP Pupnet LTD | 256 | 1 | 2 |
| AS209669GB | PRIMONET-AS Ashley Primo | 256 | 3 | 4 |
| AS206573GB | Lonsys-uk London Systems UK Limited | 256 | — | 1 |
| AS58007GB | Witine Witine Limited | 256 | 1 | 2 |
| AS207552GB | cambridge-consultants Cambridge Consultants Limited | 256 | — | 1 |
| AS30894GB | SINCH-MBLOX-AS SINCH UK LTD. | 256 | — | 1 |
| AS212195GB | nexstor-as Nexstor Ltd | 256 | — | 1 |
| AS215252GB | LANTEC-AS Lantec Services Ltd | 256 | 1 | 2 |
| AS204539GB | AXIC-Axivora-Connect-Ltd Axivora Connect Ltd | 256 | 41 | 12 |
| AS204767GB | PRIVATE-DATACENTER VIRTUAL PRIVATE SERVER DATACENTER LIMITED | 256 | — | 1 |
| AS209540GB | EXPEDIA-DUBLIN Expedia.com Ltd. | 256 | — | 1 |
| AS34675GB | PIH-UK Prima Internet Holdings Limited | 256 | — | 1 |
| AS203105GB | BlahajInternet Blahaj Internet Ltd | 256 | 1 | 2 |
| AS50888GB | MINOTAUR-ASN Minotaur I.T. Limited | 256 | — | 1 |
| AS198636GB | CAPSULA-AS CAPSULA LTD | 256 | 1 | 2 |
| AS216036GB | TOTALCOMMS-AS Signal Telecom Ltd | 256 | — | 1 |
| AS216265GB | ARISTO-NET ARISTO NETWORKS LTD | 256 | 1 | 2 |
| AS8272GB | NETSCALIBUR-UK Claranet Limited | 256 | — | 1 |
| AS34625GB | OSHS-AS OSHS Ltd | 256 | — | 1 |