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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 |
| AS203465GB | HEIDMAR-CORE Heidmar UK Limited | — | — | 0 |
| AS197378GB | ZYME Zyme Limited | — | 1 | 1 |
| AS48493GB | TFMNET-AS TFM NETWORKS LIMITED | — | — | 0 |
| AS197613GB | NMARSHALL-AS Nicholas Marshall | — | 17 | 2 |
| AS34890GB | ASOS-AS ASOS.COM Limited | — | — | 0 |
| AS13017GB | CABLE-AND-WIRELESS VODAFONE ENTERPRISE EQUIPMENT LIMITED | — | — | 0 |
| AS213771GB | PLATANO-NETWORKS DCC TECH LTD | — | 10 | 3 |
| AS8548GB | AS8548 Jisc Services Limited | — | — | 0 |
| AS7042GB | UK-ALPHA GamerDating Ltd | — | — | 0 |
| AS215323GB | SGM SGM STUDIOS LTD | — | — | 0 |
| AS214565GB | Empeiria-Ai-Transit EMPEIRIA AI LTD | — | — | 0 |
| AS210453GB | VLXTEST VeloxServ Communications Ltd | — | — | 0 |
| AS208680GB | LONIX-LTD London IX Limited | — | — | 0 |
| AS207927GB | TOSHOST TOSHOST LTD | — | — | 0 |
| AS60710GB | NCL-IX-RS Stellium Networks Limited | — | — | 0 |
| AS205374GB | NEXUSHOST NexusHost LTD | — | — | 0 |
| AS199843GB | MINDTHECLOUD-AS Mindthecloud Ltd | — | — | 0 |
| AS198796GB | PEARSON-HARPER Phusion IM Limited | — | — | 0 |
| AS204375GB | Adam-Goodenough Adam Goodenough | — | 17 | 2 |
| AS197213GB | NINETY-ONE-TELECOM 91TELECOM LTD | — | — | 0 |
| AS50935GB | International-Hosting-Solutions-AS INTERNATIONAL HOSTING SOLUTIONS LLP | — | — | 0 |
| AS212867GB | SIPALTO Sipalto Ltd | — | — | 0 |
| AS216126GB | James-Ledger James Ledger | — | 13 | 13 |
| AS38237GB | LOADEDGE LoadEdge Limited | — | — | 0 |
| AS35662GB | IOMARTHOSTING Iomart Managed Services Limited | — | — | 0 |
| AS202631GB | LINX-GVPP London Internet Exchange Ltd. | — | — | 0 |
| AS214005GB | MAINSTREAM-CIR-AS Mainstream Digital Ltd | — | — | 0 |
| AS212556GB | BT-ESC British Telecommunications PLC | — | — | 0 |
| AS209756GB | Msphere Msphere Ltd | — | — | 0 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS208585GB | CSSUK Clear Street Services UK LTD | — | — | 0 |
| AS206895GB | PRIMONET-RESEARCH-AS Ashley Primo | — | — | 0 |
| AS205328GB | spirit The Spiritual Agency, private company limited by guarantee | — | — | 0 |
| AS209565GB | JIANYUELAB-STAFF JIANYUELAB LTD | — | 2 | 2 |
| AS205281GB | NF-CLOUD1 Otava Tech LTD | — | — | 0 |
| AS212010GB | XCOMMUK X.COMMunications Ltd. | — | — | 0 |
| AS208485GB | PINHOUSE-AS PINHOUSE LIMITED | — | 1 | 1 |
| AS202455GB | CUSHWAKE-NL Cushman & Wakefield Debenham Tie Leung Limited | — | — | 0 |
| AS198536GB | LUDIC-LABS Bekalu Terefe | — | — | 0 |
| AS64474GB | ASN-IITSS IT Support Services Team Limited | — | — | 0 |
| AS51782GB | VONEUS Voneus Ltd | — | — | 0 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS44008GB | RBKC Royal Borough of Kensington and Chelsea | — | — | 0 |
| AS43878GB | EUROPE-CONNECTED Clouvider Limited | — | — | 0 |
| AS43475GB | STFC-AS Science Technology Facilities Council | — | — | 0 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |