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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
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 | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
| — |
| 320 |
| 5 |
| AS59893GB | FRC-AS Free Range Cloud Ltd. | — | 4 | 4 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS200198GB | DSMTech DSM (GB) Limited | — | 16 | 1 |
| AS216324GB | HYPERGROUP-NET - Hyper Group Network Ltd. | — | 3 | 3 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 20 | 12 |
| AS205441GB | LUMO Lumo Cloud Limited | — | — | 0 |
| AS213507GB | SKYQUANTUM-TELECOM SKYQUANTUM TELECOM LTD. | — | 753.7K | 23 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS198617GB | PrenHost PrenHost Ltd | — | — | 0 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 272 | 2 |
| AS31532GB | SKYBET-AS Hestview Limited | — | — | 0 |
| AS35196GB | IH-TRANSIT-AS FIRST SERVER LIMITED | — | 65.5K | 2 |
| AS206097GB | gameshield GAMESHIELD LIMITED | — | — | 0 |
| AS198768GB | OASISINFO-AS OASIS INFOTECH LIMITED | — | 2 | 2 |
| AS206392GB | HACKWORTH_UK Hackworth Ltd | — | 50 | 4 |
| AS199111GB | GC-NET GRAND CYAN LTD | — | 16 | 1 |
| AS40550GB | IIX-GTIIX-RS - IX Reach Ltd | — | — | 0 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 17 | 17 |
| AS205383GB | PERRYNET Rhys Perry | — | 1 | 1 |
| AS209600GB | LIVEFIXGROUP Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS200707GB | APPMAIL Integrated Digital Services Ltd | — | 65.5K | 1 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS202076GB | SCOTTISHFIBRE Fibre Networks (Scotland) Limited | — | 21 | 3 |
| AS204345GB | STALLARD Timothy Stallard | — | 1 | 1 |
| AS43336GB | ASPIXIE PIXIE NETWORKS LTD | — | 524.3K | 1 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS216055GB | blue Wren Olivia Wood | — | 1 | 1 |
| AS202751GB | BGP_AS Christopher Edwards | — | 1 | 1 |
| AS202939GB | CHIMON-NETWORK Chimon Technology Ltd | — | 848 | 20 |
| AS49201GB | HOWICK BITNIFTY LTD | — | — | 0 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS204660GB | Tiger-Technologies-Limited Tiger Technologies Limited | — | 1 | 1 |
| AS213767GB | RH Richard Humphries | — | 1 | 1 |
| AS200493GB | WHITEQUARK-AS Ekaterina Zotova | — | 1 | 1 |
| AS202235GB | CSD-COMMS UK On-line Agri-sales Limited | — | 65.5K | 1 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS198174GB | VEAN-AS Vean Networks Ltd | — | 1 | 1 |
| AS199686GB | aaroncarson Aaron Carson | — | 1 | 1 |