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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 |
| 768 |
| 524.3K |
| 3 |
| AS215657GB | Hachette-UK Hachette UK Limited | 768 | — | 2 |
| AS213905GB | ISPLABS ISPLABS LIMITED | 768 | 22 | 10 |
| AS201755GB | SQUIZUK Squiz UK Limited | 768 | — | 2 |
| AS49487GB | ZTELAS IMBIL CONSULTANCY SERVICES LIMITED | 768 | — | 3 |
| AS204777GB | telent telent Technology Services Ltd | 768 | — | 3 |
| AS206483GB | REDMATTER Red Matter Limited | 768 | — | 3 |
| AS205120GB | addooco Addooco IT Ltd | 768 | — | 3 |
| AS201131GB | LGH-Network LIGA HOSTING LTD | 768 | 4 | 7 |
| AS204242GB | TRUTECS-AS Trutec Services | 768 | — | 3 |
| AS59952GB | ExpediaEU Expedia.com Ltd. | 768 | — | 3 |
| AS208756GB | deas-001 ALCON TELECOM LTD | 768 | — | 2 |
| AS25546GB | BROOKLANDCOMP-AS Brookland Computer Services Limited | 768 | — | 2 |
| AS201867GB | OXAGON-AS OXAGON LIMITED | 768 | — | 3 |
| AS204928GB | AS-BONSAIHOST Bonsai Hosting ltd | 768 | 65.5K | 4 |
| AS212169GB | TECH-RMMINET CARDOCK HOSTING LIMITED | 768 | — | 3 |
| AS203614GB | NEXTTRANSLATE-AS NEXTTRANSLATE LTD | 768 | — | 3 |
| AS15490GB | SHANEMCC Shane Mc Cormack | 768 | 524.3K | 3 |
| AS201409GB | hostshield HOSTSHIELD LTD | 768 | — | 3 |
| AS212890GB | AetherCloud ONEMAN NETWORK LIMITED | 768 | 5 | 8 |
| AS60200GB | VCC-UK Victor Connect Ltd. | 768 | — | 3 |
| AS8336GB | InnovationGrpEMEA THE INNOVATION GROUP (EMEA) LTD | 768 | — | 3 |
| AS202154GB | brevanhoward Brevan Howard Asset Management LLP | 768 | — | 3 |
| AS44548GB | CMCMarkets-AS CMC MARKETS PLC | 768 | — | 3 |
| AS59920GB | LUSORY Lusory Limited | 768 | 4.1K | 4 |
| AS209134GB | REVOPCI Atmoso Limited | 768 | — | 3 |
| AS201226GB | LEASINGOPTIONSLTD-AS Leasing Options Limited | 768 | — | 2 |
| AS214663GB | DanBot-Hosting-LTD DanBot Hosting LTD | 768 | 17 | 5 |
| AS34099GB | ROAD-TECH-COMPUTER-SYSTEMS Road Tech Computer Systems Ltd. | 768 | — | 2 |
| AS48090GB | DMZHOST TECHOFF SRV LIMITED | 768 | — | 3 |
| AS202149GB | platformuk Comcast International Holdings UK Limited | 768 | — | 2 |
| AS213460GB | simplisticnodeus Lonex Group Limited | 768 | 1 | 4 |
| AS209363GB | skinark-as SKINARK LTD | 768 | — | 3 |
| AS50156GB | BOXED-IT Boxed IT Ltd. | 768 | 1 | 3 |
| AS204945GB | D4T4 Celebrus Technologies plc | 768 | — | 2 |
| AS48553GB | MARKETAXESS Marketaxess Europe Ltd | 768 | — | 3 |
| AS211878GB | ALLSIMPLE All Simple Internet Services LLP | 768 | 1 | 4 |
| AS201738GB | UFO-TECHNOLOGIES-LIMITED UFO TECHNOLOGIES LIMITED | 768 | — | 3 |
| AS202901GB | NETCALL Netcall Technology Limited | 768 | — | 3 |
| AS44980GB | AS44980 Paul Cairney | 768 | — | 3 |
| AS49490GB | CIRCLENET-AS Circlenet LLP | 768 | 65.5K | 3 |
| AS199492GB | EASYINTERNET Easy Internet Solutions Limited | 768 | — | 2 |
| AS205944GB | ISAM1 ISAM FUNDS (UK) LIMITED | 768 | — | 3 |
| AS206024GB | Far-UK-DualHoming RELX GROUP PLC | 768 | — | 2 |
| AS211678GB | MYFI-AS Michaelston y Fedw Internet CIC | 768 | 524.3K | 3 |
| AS47296GB | HiFX-AS HIFX EUROPE LIMITED | 768 | — | 3 |
| AS212217GB | bbonline BB-Online UK Ltd | 1K | 1 | 5 |