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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 | 4,290 |
| — |
| 2 |
| 2 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS201335GB | SEVENNET-UK Seven Networking UK Ltd | — | 4 | 4 |
| AS61126GB | ROUTED Lee Valentine | — | 3 | 3 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS142290GB | AGARTHATELEKOMLTD-AS-AP - AGARTHA TELEKOM LTD | — | 1 | 1 |
| AS219494GB | HACKWORTH_UK_2 Hackworth Ltd | — | 2 | 2 |
| AS48987GB | JYANGNET Jiaxun Yang | — | 1 | 1 |
| AS58052GB | VOLTERIC Volteric Limited | — | 1 | 1 |
| AS215332GB | SNIFF122-AS Lewis Foster | — | 1 | 1 |
| AS202627GB | CARBONDNS Fika Studio Limited | — | 1 | 1 |
| AS218940GB | KUMO2 Tealight Ltd | — | 1 | 1 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS205649GB | TOSLER-NET Shaun Tosler | — | 1 | 1 |
| AS215022GB | FWLB-networks Jamie Hosker | — | 1 | 1 |
| AS58339GB | MARIA-AS MARIA STYLE LTD | — | 1.4K | 33 |
| AS199129GB | DIRECTCONNECT-AS Direct Connect (ISP) Ltd | — | 1 | 1 |
| AS199519GB | THATGUYJACK-NET Jack Brierley | — | 9 | 9 |
| AS212121GB | VAGUE James Ray | — | 5 | 5 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 16 | 1 |
| AS200455GB | HOTARU-AS HOTARU NETWORK LTD. | — | 178 | 13 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 6 | 4 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS215527GB | XERONET Xero Networks LTD | — | 7 | 7 |
| AS218748GB | OSCAR-BRADLEY Oscar Lewis Bradley | — | 4.1K | 1 |
| AS200198GB | DSMTech DSM (GB) Limited | — | 16 | 1 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS200279GB | DOUWES-NET Thomas Douwes | — | 5 | 5 |
| AS204291GB | pinguin Thomas McLoughlin | — | 337 | 7 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS219526GB | Jakenet Jake Turner | — | 1 | 1 |
| AS203766GB | AWILLS Andrew Wills | — | 1 | 1 |
| AS197166GB | GOTSCHNA-AS Gotschna Limited | — | 2 | 2 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 29 | 14 |
| AS209808GB | LUKE Luke James | — | 64 | 1 |
| AS204446GB | HELLOMOUSE Hellomouse Ltd | — | 6 | 6 |
| AS58285GB | ASSIXOP Sixnet Operation Ltd | — | 10.6M | 256 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS216055GB | blue Wren Olivia Wood | — | 1 | 1 |
| AS213982GB | DISTRICTB-AS Callum Bennett | — | 17 | 2 |
| AS213265GB | RSRUK NEO NEXT + ENERGY RESOURCES UK LIMITED | — | — | 0 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS209606GB | BEYONDORBIT Beyond Orbit Ltd. | — | 3 | 3 |
| AS202235GB | CSD-COMMS UK On-line Agri-sales Limited | — | 65.5K | 1 |