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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.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| 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 |
| — |
| 1 |
| 1 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS57110GB | AARAN-CLOUD-AS Aaran Perry | — | 257 | 2 |
| AS200927GB | ProxyOmega ProxyOmega LTD | — | 65.5K | 1 |
| AS209808GB | LUKE Luke James | — | 64 | 1 |
| AS213982GB | DISTRICTB-AS Callum Bennett | — | 17 | 2 |
| AS216055GB | blue Wren Olivia Wood | — | 1 | 1 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 4 | 4 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 28 | 13 |
| AS213507GB | SKYQUANTUM-TELECOM SKYQUANTUM TELECOM LTD. | — | 1.4M | 44 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS198276GB | ARPERLA Jordan Robert | — | 2 | 2 |
| AS207086GB | KNOYDART The Knoydart Foundation Ltd | — | — | 0 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS50412GB | AES-AS Aspect Enterprise Solutions Limited | — | — | 0 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS208612GB | AS-KURT Kurt McLester | — | — | 0 |
| AS198174GB | VEAN-AS Vean Networks Ltd | — | 1 | 1 |
| AS214749GB | PAW James Cahill | — | 6 | 6 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 2 | 2 |
| AS56328GB | VNP VNP DIGITAL Ltd. | — | — | 0 |
| AS219327GB | DISASTER Disaster Limited | — | 1 | 1 |
| AS213026GB | GWILKINSON George Wilkinson | — | 1 | 1 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS206000GB | HRE Harry Rowan Elenor | — | 259 | 4 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS219457GB | Zephyrbash-Labs Evan Galvin | — | 1 | 1 |
| AS207965GB | ETIENNE-LABAUME ETIENNE LABAUME | — | 13 | 3 |
| AS202776GB | Moeclub MOECLUB LTD | — | 9 | 9 |
| AS209600GB | AS209600 Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS210683GB | syo Syo Limited | — | 1 | 1 |
| AS215332GB | SNIFF122-AS Lewis Foster | — | 1 | 1 |
| AS62346GB | XTRAKTER-LTD-ASN MARKETAXESS POST-TRADE LIMITED | — | — | 0 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 28 | 16 |
| AS64474GB | ASN-IITSS IT Support Services Team Limited | — | 3 | 3 |
| AS208051GB | SR2COM SR2 Communications Limited | — | 16 | 1 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS25085GB | ALUE-NET ALUE LTD | — | 12 | 12 |
| AS215619GB | RCD-AS RED COKE DEVELOPMENT LTD | — | 4 | 4 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS12290GB | EXONETRIC Exonetric Consulting Ltd | — | 65.5K | 1 |
| AS209606GB | BEYONDORBIT Beyond Orbit Ltd. | — | 3 | 3 |
| AS200279GB | DOUWES-NET Thomas Douwes | — | 5 | 5 |
| AS200365GB | Possibly-Lizards Possibly Lizards Limited | — | 257 | 2 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |