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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 |
| — |
| 65.5K |
| 1 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS42192GB | India THUNDER NETWORK LIMITED | — | — | 0 |
| AS206792GB | ZACH Zachary Buller | — | 16 | 1 |
| AS42173GB | Yahoo-Switzerland Yahoo-UK Limited | — | — | 0 |
| AS204931GB | PNOSOLUTIONS-AS PNO Solutions Limited | — | 8 | 2 |
| AS34026GB | IXBIRMINGHAM Nuco Technologies Ltd | — | — | 0 |
| AS58339GB | MARIA-AS MARIA STYLE LTD | — | 704 | 33 |
| AS42565GB | PacketExchange GTT - EMEA Ltd. | — | — | 0 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS208589GB | uk123lir ANT BM Limited | — | 1 | 1 |
| AS25314GB | CCUK1 Clear Connect Limited | — | — | 0 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS8546GB | YOUR-COMMS-UK-AS Vodafone Limited | — | — | 0 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS5388GB | ENERGIS-AS VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS199688GB | CRITPERF-AS Critical Perfect Ltd | — | 16 | 1 |
| AS8716GB | ASINCORE Redcentric Solutions Ltd | — | — | 0 |
| AS204293GB | TinyHomeLab TinyHomeLab Ltd | — | 1 | 1 |
| AS41448GB | fpl-as Future Publishing Ltd | — | — | 0 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS213447GB | The-Aster-Institute-of-Education ASTER GLOBAL CO. LTD | — | 1 | 1 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 68.6K | 17 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 17 | 17 |
| AS61024GB | ISP-BACKBONE-LTD Cloud Unboxed Limited | — | — | 0 |
| AS199111GB | GC-NET GRAND CYAN LTD | — | 16 | 1 |
| AS197378GB | ZYME Zyme Limited | — | 1 | 1 |
| AS204660GB | Tiger-Technologies-Limited Tiger Technologies Limited | — | 1 | 1 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 16 | 1 |
| AS208632GB | netomnia YouFibre Limited | — | — | 0 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS205464GB | dyfedit Voneus Ltd | — | — | 0 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS212018GB | GLFRASER Graeme Fraser | — | — | 0 |
| AS215127GB | TEAPOT 410 Teapot Limited | — | 16 | 1 |
| AS211511GB | JIDO Jido Ltd | — | — | 0 |
| AS48961GB | WarwickNet Glide Student & Residential Limited | — | 65.5K | 1 |
| AS203094GB | ORG-CCL119-RIPE COMMUNITY CABLE LTD | — | — | 0 |
| AS209771GB | SYSN SYSN LTD | — | 2 | 2 |
| AS206335GB | HUDSON-GLOBAL-RESOURCES-LTD Morgan Philips UK Limited | — | — | 0 |
| AS212121GB | VAGUE James Ray | — | 4 | 4 |
| AS50534GB | VMO2 Virgin Media Limited | — | — | 0 |
| AS210683GB | syo Syo.io Limited | — | 1 | 1 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |
| AS197166GB | GOTSCHNA-AS Gotschna Limited | — | 2 | 2 |