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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 | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 968.4K | 3,979 |
| — |
| 1 |
| 1 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS212437GB | ADL ADT Defence Limited | — | 524.3K | 1 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 17 | 17 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 260 | 5 |
| AS59920GB | LUSORY Lusory Limited | — | 1 | 1 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS211879GB | NJRYCE Nicholas Ryce | — | 1 | 1 |
| AS206392GB | HACKWORTH_UK Hackworth Ltd | — | 50 | 4 |
| AS203504GB | Tomas-Freitas-Fernandes Tomas Freitas Fernandes | — | 4 | 4 |
| AS208589GB | uk123lir ANT BM Limited | — | 1 | 1 |
| AS202615GB | ECHO Inspect Element Ltd | — | 2 | 2 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS200707GB | APPMAIL Integrated Digital Services Ltd | — | 65.5K | 1 |
| AS212121GB | VAGUE James Ray | — | 4 | 4 |
| AS213982GB | DISTRICTB-AS Callum Bennett | — | 17 | 2 |
| AS199794GB | EMO-AS EMOCLOUD LTD | — | 272 | 2 |
| AS207890GB | Intefluent Andrew Williams | — | 17 | 2 |
| AS213767GB | RH Richard Humphries | — | 1 | 1 |
| AS215600GB | KTTCARRIER KTT Europe Limited | — | 65.5K | 1 |
| AS210387GB | GUARDY Guardy Limited | — | 4.1K | 1 |
| AS202627GB | CARBONDNS Fika Studio Limited | — | 1 | 1 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 68.9K | 18 |
| AS203873GB | HEX-NETWORK Alexander Berry-Roe | — | 288 | 3 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 16 | 7 |
| AS214592GB | GLADELIGHT Gladelight Limited | — | 17 | 2 |
| AS210683GB | syo Syo.io Limited | — | 1 | 1 |
| AS206792GB | ZACH Zachary Buller | — | 16 | 1 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS199111GB | GC-NET GRAND CYAN LTD | — | 16 | 1 |
| AS213543GB | JONES-LAB Alexander Jones | — | 1 | 1 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |
| AS216364GB | uk-globalreachtech Global Reach Technology EMEA Limited | — | 8.2K | 2 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS202194GB | HORDEN-ENGINEERING Horden Engineering Limited | — | 1 | 1 |
| AS209771GB | SYSN SYSN LTD | — | 2 | 2 |
| AS206877GB | SharedGrid SharedGrid Ltd | — | 1 | 1 |
| AS209606GB | BEYONDORBIT Beyond Orbit Ltd. | — | 3 | 3 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS208485GB | PINHOUSE-AS PINHOUSE LIMITED | — | 1 | 1 |
| AS35196GB | IH-TRANSIT-AS FIRST SERVER LIMITED | — | 65.5K | 2 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS25085GB | ALUE-NET ALUE NETWORK LIMITED | — | 5 | 5 |
| AS200299GB | BASESERV-AS BaseServ Limited | — | 1 | 1 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |