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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 |
| Marex-SA-AS Spectron Services Limited |
| — |
| — |
| 0 |
| AS210727GB | BuyLtd Buy Limited | — | — | 0 |
| AS202415GB | IDSI-2 Integrated Digital Services Ltd | — | — | 0 |
| AS199748GB | CCN-UK Voneus Ltd | — | — | 0 |
| AS56726GB | fouron 4on LTD | — | — | 0 |
| AS50711GB | SYN-ANY SYN LTD | — | — | 0 |
| AS199766GB | JNET Julita Nowacki | — | — | 0 |
| AS204994GB | BAHAMUT-ZONE Luke Seabrook | — | 1 | 1 |
| AS201164GB | Cool-Studio Cool Studio Limited | — | 257 | 2 |
| AS216157GB | SIXNET-OP Sixnet Operation Ltd | — | 65.5K | 1 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS214242GB | Jx Jiaxing Xing | — | 784 | 4 |
| AS207135GB | Giotsas Vasileios Giotsas | — | 2 | 2 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 4 | 4 |
| AS215754GB | FIBREWAVE-CUST Fiberwave Broadband Ltd | — | 4.1K | 1 |
| AS58285GB | ASSIXOP Sixnet Operation Ltd | — | 10.6M | 256 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS199109GB | FruburyNet Guy Fenn-Newbury | — | 1 | 1 |
| AS198358GB | KAT Katherine Levi | — | 513 | 3 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS214592GB | GLADELIGHT Gladelight Limited | — | 17 | 2 |
| AS56367GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS208485GB | PINHOUSE-AS PINHOUSE LIMITED | — | 1 | 1 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS218843GB | OMNIVISION-INTERNET-GATEWAY Omnivision Solutions Ltd | — | 339 | 9 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS213265GB | RSRUK NEO NEXT + ENERGY RESOURCES UK LIMITED | — | — | 0 |
| AS202488GB | balticbroadband Baltic Broadband Limited | — | — | 0 |
| AS200143GB | KWZTECH KWZ Technologies Ltd. | — | — | 0 |
| AS198729GB | B4SH Broadband for Surrey Hills Ltd | — | — | 0 |
| AS49503GB | IDE-GROUP-MANAGE MAINFRAME & CYBERNETIC SYSTEMS LIMITED | — | — | 0 |
| AS48562GB | EQUINIX-CLOUD-EXCHANGE-DUBAI-ASN EQUINIX (SERVICES) LIMITED | — | — | 0 |
| AS34407GB | WAVECREST-AS01 Wavecrest Networks Limited | — | — | 0 |
| AS29026GB | CTAYLOR-AS CHARLES TAYLOR LIMITED | — | — | 0 |
| AS8835GB | VITRIFI Vitrifi Limited | — | — | 0 |
| AS219311GB | wavemobile Wave Mobile Ltd | — | — | 0 |
| AS202525GB | CHUNMING-AS Chun Ming Ou | — | 3 | 3 |
| AS21321GB | NETUITY-AS BITNIFTY LTD | — | — | 0 |
| AS219457GB | Zephyrbash-Labs Evan Galvin | — | 1 | 1 |
| AS204660GB | Tiger-Technologies-Limited Tiger Technologies Limited | — | 1 | 1 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 28 | 13 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS215022GB | FWLB-networks Jamie Hosker | — | 1 | 1 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |