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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 |
| 1.5K |
| — |
| 6 |
| AS203106GB | ORG-CFL10-RIPE ClearNet Fibre Ltd | 1.5K | — | 6 |
| AS60038GB | TAMG TripAdvisor Limited | 1.5K | — | 3 |
| AS206300GB | YUNYOO YUNYOO LTD | 1.5K | 4 | 9 |
| AS59445GB | ICC-AS ICC NETWORKS LTD | 1.5K | — | 3 |
| AS42513GB | NATILIK-AS Natilik Ltd | 1.5K | — | 4 |
| AS206629GB | MINISTRYOFJUSTICE Ministry of Justice | 1.5K | — | 6 |
| AS203851GB | as_csd001 CSD Network Services Ltd | 1.5K | — | 6 |
| AS30909GB | FASTVISION Fastvision Limited | 1.5K | — | 3 |
| AS59803GB | cceip DATAQUEST (HEATHROW) LIMITED | 1.5K | — | 2 |
| AS47768GB | INTISTELECOM-AS UK Intis Telecom LTD | 1.5K | 1 | 4 |
| AS202147GB | VPSUS VPSUS LTD | 1.5K | 1 | 7 |
| AS211091GB | IPHOUSE I P House Limited | 1.5K | — | 6 |
| AS202978GB | XIRIA Xiria Ltd | 1.5K | 524.3K | 3 |
| AS209723GB | AS_Expert EXPERT NETCLOUD LLP | 1.5K | 524.3K | 4 |
| AS29214GB | HOUSES-OF-PARLIAMENT THE HOUSE OF COMMONS | 1.5K | — | 5 |
| AS35832GB | BGFL Birmingham City Council | 1.5K | — | 5 |
| AS48412GB | pod Podsystem Limited | 1.5K | — | 3 |
| AS203054GB | ORG-TCL96-RIPE TownFibre Connect Ltd | 1.5K | 1 | 7 |
| AS204321GB | uk-nyt-cdg1 New York Times Limited | 1.5K | — | 3 |
| AS205842GB | LINKWEBSOLUTIONS Link Web Solutions LLP | 1.5K | — | 3 |
| AS60507GB | HML2-EUR-AS Hillside (Technology) Ltd | 1.5K | — | 3 |
| AS209452GB | ZuriTechnologies Zuri Technologies Limited | 1.5K | — | 3 |
| AS199455GB | ARQWIFI Virgin WiFi Ltd | 1.5K | — | 3 |
| AS210667GB | SMISHCRAFT Adam Goodenough | 1.5K | 18 | 24 |
| AS204592GB | COSMOS-AS Cosmos Wireless Ltd | 1.5K | — | 6 |
| AS44934GB | ARACHSYS Arachsys Internet Services Ltd | 1.5K | 65.5K | 5 |
| AS62417GB | DIGITALK_CLOUD_THW DIGITALK Limited | 1.3K | — | 5 |
| AS215759GB | Ziax Ziax Ltd | 1.3K | 2 | 7 |
| AS39602GB | TCG-AS The Cent.re Group Limited | 1.3K | 524.3K | 5 |
| AS215128GB | iONLINE-ISP-UK IONLINE INTERNET SOLUTIONS PROVIDER LTD | 1.3K | 524.3K | 5 |
| AS24633GB | XICON BCN Group Hosting Ltd | 1.3K | — | 2 |
| AS216167GB | Gamma-GCE Gamma Telecom Holdings Ltd | 1.3K | — | 5 |
| AS212633GB | EE-Mobile EE Mobile Telecom Ltd | 1.3K | 524.3K | 6 |
| AS59817GB | OXLETECH Oxletech Limited | 1.3K | 65.5K | 5 |
| AS206223GB | Teledyne-UK Teledyne Limited | 1.3K | — | 2 |
| AS199828GB | Inet-Plc-AS NUSO CLOUD UK LIMITED | 1.3K | — | 2 |
| AS56540GB | CONSENSUSONE-AS BITNIFTY LTD | 1.3K | — | 4 |
| AS49415GB | VTSL-AS VTSL Ltd | 1.3K | — | 5 |
| AS211844GB | SWATER-ASN Southern Water Services Ltd | 1.3K | — | 5 |
| AS25588GB | SIXDEGREES-CLOUD-AS Six Degrees Technology Group Limited | 1.3K | — | 4 |
| AS204103GB | commswest Comms West Limited | 1.3K | — | 5 |
| AS59820GB | Astro Astro Communications LTD | 1.3K | — | 2 |
| AS34407GB | WAVECREST-AS01 Wavecrest Networks Limited | 1.3K | 524.3K | 3 |
| AS44314GB | ITSYNERGY ITsynergy Limited | 1.3K | 65.5K | 3 |
| AS207765GB | Transit-Networks-Limited Transit Networks Limited | 1.3K | — | 5 |
| AS206232GB | AcuityUC Acuity Unified Communications Limited | 1.3K | — | 5 |