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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 | 170 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 976.9K | 4,012 |
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| 0 |
| AS198332GB | HOSTINGSYSTEMS-AS32 Hosting Systems Ltd | — | — | 0 |
| AS61972GB | stixinternet STIX Internet Ltd | — | — | 0 |
| AS49999GB | BANDWIDTHTECH-AS Hydra Communications Ltd | — | — | 0 |
| AS35545GB | Clouvider-Anycast Clouvider Limited | — | — | 0 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |
| AS211597GB | Litfibre Lit Fibre Group Ltd. | — | — | 0 |
| AS209858GB | IPCHECKBOX-LTD IPCHECKBOX LTD | — | — | 0 |
| AS206144GB | NA-Transit Clouvider Limited | — | — | 0 |
| AS205750GB | Threadneedle_Asset_Management_Holdings_Ltd Threadneedle Asset Management Holdings Ltd | — | — | 0 |
| AS200198GB | DSMTech DSM (GB) Limited | — | 16 | 1 |
| AS215127GB | TEAPOT 410 Teapot Limited | — | 16 | 1 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS200840GB | chronara-ai-8663 Chronara AI Ltd | — | 1 | 1 |
| AS214018GB | IIC-AS INTERNET INTELLIGENCE COMPANY LTD | — | 1 | 1 |
| AS200707GB | APPMAIL Integrated Digital Services Ltd | — | 65.5K | 1 |
| AS12708GB | OneTel-AS TalkTalk Communications Limited | — | — | 0 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 30 | 15 |
| AS199519GB | THATGUYJACK-NET Jack Brierley | — | 9 | 9 |
| AS199688GB | CRITPERF-AS Critical Perfect Ltd | — | 16 | 1 |
| AS215527GB | XERONET Xero Networks LTD | — | 8 | 8 |
| AS58285GB | ASSIXOP Sixnet Operation Ltd | — | 65.8K | 2 |
| AS213673GB | WAISE-AS WAISE EUROPE LTD | — | 320 | 5 |
| AS201567GB | Cinnabar Vivian Band | — | 1 | 1 |
| AS211966GB | BEN-HOUGHTON Ben Houghton | — | — | 0 |
| AS202176GB | tradetech FINALTO TRADING LIMITED | — | — | 0 |
| AS197753GB | QUADV-AS QuadV Ltd | — | — | 0 |
| AS20517GB | ASN-TSC1 THE STREAMING COMPANY.COM LIMITED | — | — | 0 |
| AS50162GB | AS50162-AS 3nt solutions LLP | — | — | 0 |
| AS48663GB | PORTFAST-NORTH Portfast Ltd | — | — | 0 |
| AS44110GB | WALSALL Walsall Metropolitan Borough Council | — | — | 0 |
| AS29202GB | Empics PA Media Group Ltd | — | — | 0 |
| AS20500GB | GRIFFIN GTT - EMEA Ltd. | — | — | 0 |
| AS8550GB | LONAP-MLP LONAP Ltd | — | — | 0 |
| AS216179GB | NATE-BILL Nathaniel Bill | — | — | 0 |
| AS29026GB | CTAYLOR-AS CHARLES TAYLOR LIMITED | — | — | 0 |
| AS210187GB | KEVINRICHARDSON-AS Kevin Richardson | — | — | 0 |
| AS202488GB | balticbroadband Baltic Broadband Limited | — | — | 0 |
| AS201941GB | SWANN-AS NHS National Services Scotland | — | — | 0 |
| AS153833GB | GCXGINDIAPRIVATELIMITED-AS-IN - GCXG INDIA PRIVATE LIMITED | — | — | 0 |
| AS62189GB | INNETRA-EU Elna Paulette Valentin trading as INNETRA PC | — | — | 0 |
| AS57604GB | VPLAB-NL VPLAB LTD | — | — | 0 |
| AS50329GB | pbxhosting PBX Hosting Ltd | — | — | 0 |
| AS63041GB | IIX-SFIIX-RS - IX Reach Ltd | — | — | 0 |
| AS31398GB | NEC-EU-AS NEC Europe LTD | — | — | 0 |