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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.
3,134 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 | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,229 |
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| AS60897GB | MEDIRECT Binary Racks Limited | — | — | 0 |
| AS200898GB | HUBS-LABS High-Speed Universal Broadband Services C.I.C. | — | — | 0 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | — | 0 |
| AS208707GB | WATANIA WATANIA LTD | — | — | 0 |
| AS211900GB | IN8INITY IN8INITY GLOBAL LIMITED | — | — | 0 |
| AS212902GB | KKL Kustom Konsulting Limited | — | — | 0 |
| AS199916GB | DLG-HUB DL Insurance Services Limited | — | — | 0 |
| AS209756GB | Msphere Msphere Ltd | — | — | 0 |
| AS214005GB | MAINSTREAM-CIR-AS Mainstream Digital Ltd | — | — | 0 |
| AS215086GB | BONZI Alfred Foster | — | — | 0 |
| AS218763GB | MPHMEDIA MPH MEDIA & TECH LTD | — | — | 0 |
| AS51901GB | KECONNECT Digital Space Group Limited | — | — | 0 |
| AS42330GB | UNCHAINEDISP Unchained ISP Limited | — | — | 0 |
| AS43539GB | DRBSY Roebuck Group Limited | — | — | 0 |
| AS60180GB | NEW VPLAB LTD | — | — | 0 |
| AS63024GB | IIX-WAIIX-RS - IX Reach Ltd | — | — | 0 |
| AS208585GB | CSSUK Clear Street Services UK LTD | — | — | 0 |
| AS213060GB | IPXO-Testing-ASN Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS215242GB | DATAPENTA DATAPENTA LIMITED | — | — | 0 |
| AS6727GB | EASYNET-FRANCE GTT - EMEA Ltd. | — | — | 0 |
| AS12641GB | BT_MPLS British Telecommunications Limited | — | — | 0 |
| AS40897GB | IIX-OKIIX-RS - IX Reach Ltd | — | — | 0 |
| AS43207GB | QUICKLINE Quickline Communications Limited | — | — | 0 |
| AS48875GB | PANTOR-ENGINEERING-ASN Goldman Sachs International | — | — | 0 |
| AS205932GB | TerraNetUK TerraNet Ltd | — | — | 0 |
| AS200541GB | fvd-as1 Chess ICT Ltd | — | — | 0 |
| AS219294GB | RUNWARE Runware Ltd | — | — | 0 |
| AS57276GB | OPTIMITY Vorboss Limited | — | — | 0 |
| AS200681GB | IXMIDS-ROUTESRV IX Midlands Ltd | — | — | 0 |
| AS203902GB | LHBBC-UK Peter Buneman | — | — | 0 |
| AS205552GB | AS_BITS LOTS OF BITS LTD | — | — | 0 |
| AS205374GB | NEXUSHOST NexusHost LTD | — | — | 0 |
| AS207924GB | AS207924 WideFM Ltd | — | — | 0 |
| AS210440GB | Akaere-NetWork AKAERE NETWORKS TECHNOLOGY LTD | — | — | 0 |
| AS213190GB | STACLAR-CARRIER Staclar Carrier Ltd. | — | — | 0 |
| AS216217GB | baltic Baltic Networks Limited | — | — | 0 |
| AS214457GB | veesix-networks Veesix Networks Ltd | — | — | 0 |
| AS8709GB | VF-VPNPLUS Vodafone Enterprise Equipment Limited | — | — | 0 |
| AS60710GB | NCL-IX-RS Stellium Networks Limited | — | — | 0 |
| AS44008GB | RBKC Royal Borough of Kensington and Chelsea | — | — | 0 |
| AS58124GB | SIXDG-CSG Six Degrees Technology Group Limited | — | — | 0 |
| AS198536GB | LUDIC-LABS Bekalu Terefe | — | — | 0 |
| AS201038GB | MPARA1 Matteo Paramatti | — | — | 0 |
| AS202631GB | LINX-GVPP London Internet Exchange Ltd. | — | — | 0 |
| AS203981GB | DIXIPAY-AS DIXIPAY LTD | — | — | 0 |
| AS205328GB | spirit The Spiritual Agency, private company limited by guarantee | — | — | 0 |