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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 | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 968.4K | 3,979 |
| — |
| 1 |
| 1 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS206000GB | HRE Harry Rowan Elenor | — | 258 | 3 |
| AS210683GB | syo Syo.io Limited | — | 1 | 1 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS200800GB | ZURGANF-AS Zurganf Ltd | — | 1 | 1 |
| AS43336GB | ASPIXIE PIXIE NETWORKS LTD | — | 524.3K | 1 |
| AS142290GB | AGARTHATELEKOMLTD-AS-AP - AGARTHA TELEKOM LTD | — | 1 | 1 |
| AS213982GB | DISTRICTB-AS Callum Bennett | — | 17 | 2 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS56758GB | CR0BAR Cr0bar Limited | — | 6 | 6 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS198276GB | Lazuline Jordan Robert | — | 1 | 1 |
| AS216055GB | blue Wren Olivia Wood | — | 1 | 1 |
| AS213026GB | GWILKINSON George Wilkinson | — | 2 | 2 |
| AS213767GB | RH Richard Humphries | — | 1 | 1 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS207586GB | DOYLE-AS Doyle (North West) Ltd. | — | 16 | 1 |
| AS202776GB | Moeclub MOECLUB LTD | — | 4 | 4 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS148971GB | KEIBIIN-AS-AP - Keibiin's Holdings Limited | — | 313 | 13 |
| AS9786GB | XIANDOUCLOUD1-AS-AP - XIANDOUCLOUD INFORMATION TECHNOLOGY LTD | — | 1 | 1 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS48961GB | WarwickNet Glide Student & Residential Limited | — | 65.5K | 1 |
| AS201529GB | ORCHID-CELLMARK-ABINGDON Orchid Cellmark Ltd | — | 1 | 1 |
| AS204345GB | STALLARD Timothy Stallard | — | 1 | 1 |
| AS200499GB | EHL-AS Enterprises Holding LTD | — | 1 | 1 |
| AS214018GB | IIC-AS INTERNET INTELLIGENCE COMPANY LTD | — | 1 | 1 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 16 | 7 |
| AS209771GB | SYSN SYSN LTD | — | 2 | 2 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS201038GB | MPARA1 Matteo Paramatti | — | 1 | 1 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS25085GB | ALUE-NET ALUE NETWORK LIMITED | — | 5 | 5 |
| AS210961GB | SIGN4 Nathan York | — | 1 | 1 |
| AS206144GB | NA-Transit Clouvider Limited | — | — | 0 |
| AS213085GB | LOGINELTDAS Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS12708GB | OneTel-AS TalkTalk Communications Limited | — | — | 0 |
| AS199688GB | CRITPERF-AS Critical Perfect Ltd | — | 16 | 1 |
| AS59920GB | LUSORY Lusory Limited | — | 1 | 1 |
| AS200365GB | Possibly-Lizards Possibly Lizards Limited | — | 257 | 2 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |