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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 | 168 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 340 |
| AS212238GB | CDNEXT Datacamp Limited | 1M | 4,120 |
| — |
| 1 |
| 1 |
| AS34026GB | IXBIRMINGHAM Nuco Technologies Ltd | — | — | 0 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |
| AS199688GB | CRITPERF-AS Critical Perfect Ltd | — | 16 | 1 |
| AS24670GB | COHTECH01-AS Coherent Technology Solutions Limited | — | — | 0 |
| AS199519GB | THATGUYJACK-NET Jack Brierley | — | 8 | 8 |
| AS215631GB | qxtellimited QXTEL Limited | — | — | 0 |
| AS199804GB | TFES-AS THE FIRST EAST STAR LTD | — | 1 | 1 |
| AS9105GB | TISCALI-UK TalkTalk Communications Limited | — | — | 0 |
| AS214018GB | IIC-AS INTERNET INTELLIGENCE COMPANY LTD | — | 1 | 1 |
| AS208612GB | AS-KURT Kurt McLester | — | — | 0 |
| AS212806GB | stratagem VeloxServ Communications Ltd | — | 64 | 1 |
| AS208341GB | AIRBAND-WHOLESALE RURAL WIRELESS LIMITED | — | — | 0 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 17 | 17 |
| AS8546GB | YOUR-COMMS-UK-AS Vodafone Limited | — | — | 0 |
| AS213771GB | PLATANO-NETWORKS DCC TECH LTD | — | 12 | 4 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS206877GB | SharedGrid SharedGrid Ltd | — | 1 | 1 |
| AS199794GB | EMO-AS EMOCLOUD LTD | — | 528 | 3 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS208589GB | uk123lir ANT BM Limited | — | 1 | 1 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 32 | 17 |
| AS214931GB | ALUE-NET ALUE NETWORK LIMITED | — | 1 | 1 |
| AS200708GB | GLASSIO-AS Hugo Rodrigues Da Costa | — | 1 | 1 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS212437GB | ADL ADT Defence Limited | — | 524.3K | 1 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS200198GB | DSMTech DSM (GB) Limited | — | 16 | 1 |
| AS9126GB | COLT Technology Services Group Limited | — | — | 0 |
| AS197378GB | ZYME Zyme Limited | — | 1 | 1 |
| AS207328GB | THRIVE-UK2 THRIVE OPERATIONS LIMITED | — | — | 0 |
| AS215363GB | Wles Wles Technologies Ltd | — | 257 | 2 |
| AS8760GB | ENERGIS-IRELAND VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS204946GB | GUFFNET ABSOLUTE GUFF LTD | — | 1 | 1 |
| AS214073GB | heart-internet-uk Heart Internet limited | — | — | 0 |
| AS209771GB | SYSN SYSN LTD | — | 2 | 2 |
| AS213854GB | RESURE RE:SURE INTELLIGENCE LTD | — | — | 0 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS8553GB | AVENSYS Avensys Networks Ltd | — | — | 0 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |