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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.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 172 |
| AS212238GB | CDNEXT Datacamp Limited | 1.2M | 4,613 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 404 |
| jandutech Beon Core Ltd |
| 768 |
| — |
| 3 |
| AS211955GB | NOTBADHOSTING NOTBAD HOSTING LTD | 768 | — | 3 |
| AS203219GB | YAHOO-AMA Yahoo-UK Limited | 768 | 1 | 4 |
| AS202630GB | SequentialNetworksUK Sequential Networks Limited | 768 | — | 3 |
| AS49487GB | ZTELAS IMBIL CONSULTANCY SERVICES LIMITED | 768 | — | 3 |
| AS206024GB | Far-UK-DualHoming RELX GROUP PLC | 768 | — | 2 |
| AS210767GB | linkhost Link Host Ltd. | 768 | 524.3K | 4 |
| AS59907GB | IMSHealth IQVIA SOLUTIONS HQ LTD | 768 | — | 3 |
| AS64415GB | CONNECTBIT-AS Ashgoal Limited | 768 | — | 3 |
| AS208711GB | ARVOX-DIGITAL ARVOX DIGITAL LTD | 768 | 3 | 6 |
| AS216311GB | NORYLIX-AS NORYLIX LTD | 768 | — | 3 |
| AS205944GB | ISAM1 ISAM FUNDS (UK) LIMITED | 768 | — | 3 |
| AS206483GB | REDMATTER Red Matter Limited | 768 | — | 3 |
| AS209363GB | skinark-as SKINARK LTD | 768 | — | 3 |
| AS210054GB | TNCG NCG Energy Ltd | 768 | 1M | 7 |
| AS204193GB | Pragma Gamma Telecom Holdings Ltd | 768 | — | 3 |
| AS215854GB | DC-3-PROJECT Exponential-E Ltd. | 768 | — | 3 |
| AS204050GB | Yoti Yoti Ltd | 768 | 1 | 4 |
| AS201864GB | as-trench MINHOCO 84 LIMITED | 768 | — | 3 |
| AS204928GB | AS-BONSAIHOST Bonsai Hosting ltd | 768 | 65.5K | 4 |
| AS202548GB | QUADRIS Quadris Ltd | 768 | 524.3K | 4 |
| AS206499GB | LOCIX LOCIX LIMITED | 768 | 180.5K | 29 |
| AS204777GB | telent telent Technology Services Ltd | 768 | — | 3 |
| AS212169GB | TECH-RMMINET CARDOCK HOSTING LIMITED | 768 | — | 3 |
| AS49490GB | CIRCLENET-AS Circlenet LLP | 768 | 65.5K | 3 |
| AS25546GB | BROOKLANDCOMP-AS Brookland Computer Services Limited | 768 | — | 2 |
| AS8296GB | HBVB HBVB Private Unlimited | 768 | — | 3 |
| AS34745GB | TELEWARE TeleWare Hosted Services Ltd. | 768 | — | 2 |
| AS206187GB | DIA-ASN Interactive Investor Services Limited | 768 | — | 3 |
| AS203035GB | xc360 Xara Computers (UK) Ltd | 768 | — | 3 |
| AS206798GB | UK-Huawei HUAWEI TECHNOLOGIES(UK)CO.,LTD | 768 | — | 2 |
| AS200552GB | ACKLO Acklo Ltd | 768 | — | 3 |
| AS214861GB | CloudExa-Hosting CloudExa-Hosting LTD | 768 | — | 3 |
| AS204242GB | TRUTECS-AS Trutec Services | 768 | — | 3 |
| AS214663GB | DanBot-Hosting-LTD DanBot Hosting LTD | 768 | 17 | 5 |
| AS31202GB | QUALCOMM QUALCOMM (UK) LIMITED | 768 | — | 3 |
| AS204204GB | uk_point72uklimited Point72 UK Limited | 768 | — | 3 |
| AS205756GB | JLR JAGUAR LAND ROVER AUTOMOTIVE PLC | 768 | — | 3 |
| AS201409GB | hostshield HOSTSHIELD LTD | 768 | — | 3 |
| AS54470GB | GCGKABAM - Garden City Games Ltd | 768 | — | 3 |
| AS206332GB | ARROW Arrow Business Communications Limited | 768 | 65.5K | 4 |
| AS59920GB | LUSORY Lusory Limited | 768 | 4.1K | 4 |
| AS44980GB | AS44980 Paul Cairney | 768 | — | 3 |
| AS215675GB | perceptiontvcdn Perception TVCDN Ltd | 768 | — | 3 |
| AS211678GB | MYFI-AS Michaelston y Fedw Internet CIC | 768 | 524.3K | 3 |
| AS210511GB | blue-telecoms Direct Market Solutions Limited | 768 | — | 3 |
| AS202364GB | gridh Grid Hosting Limited | 768 | — | 3 |