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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 |
| — |
| 17 |
| 2 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS203504GB | Tomas-Freitas-Fernandes Tomas Freitas Fernandes | — | 4 | 4 |
| AS206392GB | HACKWORTH_UK Hackworth Ltd | — | 50 | 4 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 16 | 7 |
| AS215127GB | TEAPOT 410 Teapot Limited | — | 16 | 1 |
| AS200708GB | GLASSIO-AS Hugo Rodrigues Da Costa | — | 1 | 1 |
| AS209771GB | SYSN SYSN LTD | — | 2 | 2 |
| AS207268GB | STREXP STRATEGIC EXPLORATIONS LTD | — | 24 | 6 |
| AS215158GB | SIXNET-OP2 Sixnet Operation Ltd | — | 65.5K | 1 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS197378GB | ZYME Zyme Limited | — | 1 | 1 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS206000GB | HRE Harry Rowan Elenor | — | 257 | 2 |
| AS209022GB | Tschajera-Limited Tschajera Limited | — | 4.1K | 15 |
| AS200707GB | APPMAIL Integrated Digital Services Ltd | — | 65.5K | 1 |
| AS207965GB | ETIENNE-LABAUME ETIENNE LABAUME | — | 13 | 3 |
| AS210338GB | PIXSAL-AS Kieran Breeze | — | 3 | 3 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |
| AS56758GB | CR0BAR Cr0bar Limited | — | 6 | 6 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS199688GB | CRITPERF-AS Critical Perfect Ltd | — | 16 | 1 |
| AS215527GB | XERONET Xero Networks LTD | — | 8 | 8 |
| AS213767GB | RH Richard Humphries | — | 1 | 1 |
| AS205649GB | TOSLER-NET Shaun Tosler | — | 1 | 1 |
| AS213982GB | DISTRICTB-AS Callum Bennett | — | 17 | 2 |
| AS210683GB | syo Syo.io Limited | — | 1 | 1 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS198741GB | AMELIAK Amelia Kalinowska | — | 1 | 1 |
| AS204660GB | Tiger-Technologies-Limited Tiger Technologies Limited | — | 1 | 1 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS202751GB | BGP_AS Christopher Edwards | — | 1 | 1 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 260 | 5 |
| AS198768GB | OASISINFO-AS OASIS INFOTECH LIMITED | — | 2 | 2 |
| AS214818GB | WILL-WILSON William Wilson | — | 2 | 1 |
| AS209507GB | REALLY-AWESOME-TECHNOLOGY Really Awesome Technology LTD | — | 1 | 1 |
| AS205648GB | VirgoCube_Limited VirgoCube Limited | — | 256 | 1 |
| AS214731GB | ETO-AS ETO Networks Limited | — | 617 | 42 |
| AS204994GB | BAHAMUT-ZONE Luke Seabrook | — | 1 | 1 |
| AS200104GB | crow You are never Limited | — | 4.1K | 1 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 20 | 12 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS58285GB | ASSIXOP Sixnet Operation Ltd | — | 65.8K | 2 |