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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 |
| — |
| 1 |
| 1 |
| AS212806GB | stratagem VeloxServ Communications Ltd | — | 64 | 1 |
| AS206792GB | ZACH Zachary Buller | — | 16 | 1 |
| AS218294GB | MERIDIAN-BACKBONE Brian Henry | — | 1 | 1 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |
| AS219526GB | Jakenet Jake Turner | — | 1 | 1 |
| AS15421GB | INAP-PAR PACKETFABRIC (UK) LTD | — | — | 0 |
| AS214168GB | SIXMANCHESTER Sixnet Operation Ltd | — | 65.5K | 1 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS214592GB | GLADELIGHT Gladelight Limited | — | 17 | 2 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS198358GB | KAT Katherine Levi | — | 513 | 3 |
| AS199109GB | FruburyNet Guy Fenn-Newbury | — | 1 | 1 |
| AS204994GB | BAHAMUT-ZONE Luke Seabrook | — | 1 | 1 |
| AS58285GB | ASSIXOP Sixnet Operation Ltd | — | 10.6M | 256 |
| AS215754GB | FIBREWAVE-CUST Fiberwave Broadband Ltd | — | 4.1K | 1 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 4 | 4 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS56367GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS214242GB | Jx Jiaxing Xing | — | 784 | 4 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS201164GB | Cool-Studio Cool Studio Limited | — | 257 | 2 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS218212GB | GuernseyOnline Hosting Ltd. | — | 1 | 1 |
| AS209600GB | AS209600 Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS218633GB | DIGITAL-AND-MEDIA-LIMITED Digital and Media Limited | — | — | 0 |
| AS211789GB | eVerify-Ltd EVERIFY Limited | — | — | 0 |
| AS48071GB | NORTHCOTE-AS Northcote Internet Limited | — | — | 0 |
| AS218839GB | ZONEKTELECOM-AS ZONEK TELECOM LTD | — | 10 | 10 |
| AS210985GB | BISHOP Christopher Bishop | — | 2 | 2 |
| AS218758GB | AZZURRI Lewis Brown | — | 53 | 22 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS209606GB | BEYONDORBIT Beyond Orbit Ltd. | — | 3 | 3 |
| AS213026GB | GWILKINSON George Wilkinson | — | 1 | 1 |
| AS197378GB | ZYME Zyme Limited | — | 1 | 1 |
| AS56802GB | DPKGSOFT-AS DpkgSoft International Limited | — | 1 | 1 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS218843GB | OMNIVISION-INTERNET-GATEWAY Omnivision Solutions Ltd | — | 339 | 9 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS208485GB | PINHOUSE-AS PINHOUSE LIMITED | — | 1 | 1 |