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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.
3,132 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 173 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 369 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,286 |
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| 0 |
| AS206745GB | Shawdex Shawdex Ltd | — | — | 0 |
| AS205328GB | spirit The Spiritual Agency, private company limited by guarantee | — | — | 0 |
| AS219032GB | PapilioHost Papilio Host Ltd | — | — | 0 |
| AS57110GB | AARAN-CLOUD-AS Aaran Perry | — | 257 | 2 |
| AS211209GB | EUROPEANEDGE-IX AIRBYTES COMMUNICATIONS Limited | — | — | 0 |
| AS199507GB | THALES-DNSP Thales UK Limited | — | — | 0 |
| AS209149GB | SEEKAHOST SEEKAHOST LTD | — | — | 0 |
| AS201038GB | MPARA1 Matteo Paramatti | — | — | 0 |
| AS200614GB | VRTS-GPK COHESITY INTERNATIONAL UK LIMITED | — | — | 0 |
| AS199269GB | UK-ARDENTA-ASN Claranet Limited | — | — | 0 |
| AS207200GB | Krisdev Kristian Hoyle-Johnson | — | — | 0 |
| AS201930GB | ASN-TVAT VERTALA LTD | — | — | 0 |
| AS201729GB | VALE-AS VALERUS LTD | — | — | 0 |
| AS46257GB | ATEX-ASN - Atex | — | — | 0 |
| AS47391GB | SYNWW SYN LTD | — | — | 0 |
| AS15635GB | YAHOO-UKL Yahoo-UK Limited | — | — | 0 |
| AS210703GB | FIRSTBYTE-AS FIRSTBYTE HOSTING LTD | — | — | 0 |
| AS210377GB | sift-ltd Sift Ltd | — | — | 0 |
| AS208386GB | coast-uk Coast Connect Ltd | — | — | 0 |
| AS35375GB | CONSENSUSONE BITNIFTY LTD | — | — | 0 |
| AS200493GB | WHITEQUARK-AS Ekaterina Zotova | — | 1 | 1 |
| AS212885GB | UK-NATWEST-AS212885 Natwest Markets PLC | — | — | 0 |
| AS204725GB | luna-frankland Luna Frankland | — | — | 0 |
| AS205517GB | HCBC-AS Highland Community Broadband C.I.C. | — | — | 0 |
| AS200541GB | fvd-as1 Chess ICT Ltd | — | — | 0 |
| AS198136GB | FIX-RS Alioth Systems Limited | — | — | 0 |
| AS62980GB | IIX-SJIIX-RS - IX Reach Ltd | — | — | 0 |
| AS212404GB | Integral Jones Lang LaSalle Ltd | — | — | 0 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 17 | 2 |
| AS48875GB | PANTOR-ENGINEERING-ASN Goldman Sachs International | — | — | 0 |
| AS13218GB | INNOVISE-AS WorkWave UK LTD | — | — | 0 |
| AS197040GB | DATAART-BEG DataArt Technologies UK Ltd | — | — | 0 |
| AS39215GB | TRANSTELLIGENCE Astutium Limited | — | — | 0 |
| AS35528GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS20859GB | NOMURA-AS Nomura International Plc | — | — | 0 |
| AS219035GB | AHEADUK AHEAD UK Solutions Ltd | — | — | 0 |
| AS48961GB | WarwickNet Glide Student & Residential Limited | — | 65.5K | 1 |
| AS201258GB | CRYPTIDZ Chaos Cupit | — | — | 0 |
| AS218814GB | SONICSPEED SONIC SPEED FIBER INTERNET LIMITED | — | — | 0 |
| AS200174GB | AS_WISPEED Wispeed LTD | — | — | 0 |
| AS213060GB | IPXO-Testing-ASN Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS29131GB | RAPIDSWITCH-AS IOMART CLOUD SERVICES LIMITED | — | — | 0 |
| AS201580GB | Secunia Flexera Software Limited | — | — | 0 |
| AS198372GB | wowfi-as Futility Ltd | — | — | 0 |
| AS197872GB | EA-NL-AMSTERDAM_DC Electronic Arts Limited | — | — | 0 |
| AS63022GB | IIX-SCIIX-RS - IX Reach Ltd | — | — | 0 |