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How United Kingdom ranks worldwide on dormant space, the transfer market, routing security and address density.
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 | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
| 10.5K |
| 516 |
| 41 |
| AS31742GB | SOTACONNECT Sota Solutions Ltd. | 10.5K | 589.8K | 10 |
| AS48620GB | BEAMING Beaming Ltd | 10.5K | 524.3K | 4 |
| AS213094GB | FullFibre Full Fibre Limited | 10.5K | 524.3K | 10 |
| AS6894GB | KDDI-EUROPE KDDI Europe Ltd | 10.5K | 65.5K | 4 |
| AS62163GB | IPRIVER-AS IP River Limited | 10.5K | — | 21 |
| AS42010GB | ITPS I.T. PROFESSIONAL SERVICES LIMITED | 10.5K | 65.5K | 14 |
| AS41695GB | VOSTRON-AS VOSTRON Limited | 10.2K | 65.5K | 3 |
| AS216047GB | XDPCLOUD-NET INTECLOUD CDNK LTD | 10.2K | — | 27 |
| AS48254GB | TWENTYI 20i Limited | 10.2K | 14 | 54 |
| AS198220GB | GoGrid Rackspace Ltd. | 10.2K | — | 2 |
| AS25376GB | NETNORTH-ASN Netnorth Limited | 10.2K | 491.5K | 8 |
| AS31641GB | ATLAS-COMMUNICATIONS-AS Atlas Communications (NI) Ltd | 10.2K | 65.5K | 5 |
| AS21459GB | GNSEUROPEUK-AS OneAdvanced It Services Limited | 10.2K | — | 6 |
| AS198636GB | CAPSULA-AS CAPSULA LTD | 10K | — | 14 |
| AS47480GB | BlueTigerSolutions-AS Blue Tiger Solutions Limited | 10K | — | 10 |
| AS21260GB | POSITIVE-INTERNET-UK-AS The Positive Internet Company Ltd | 10K | — | 18 |
| AS208687GB | Jurassic-Fibre AllPoints Fibre Networks Limited | 10K | 524.3K | 5 |
| AS13002GB | ISIX-AS ISIX Communications LLP | 10K | 66.3K | 13 |
| AS43009GB | INFOBIP-AS Infobip Limited | 10K | 2 | 41 |
| AS204339GB | FIRSTSERVER-FL-AS FIRST SERVER LIMITED | 10K | 2 | 41 |
| AS58325GB | BANDWIDTH-ASIA Hydra Communications Ltd | 10K | 16 | 15 |
| AS8801GB | ROCKETFIBRE Rocket Fibre Ltd | 9.7K | 589.8K | 9 |
| AS34914GB | SYNTEC-AS Syntec LTD | 9.7K | — | 5 |
| AS207163GB | SKYCD-ES-AS Sky UK Limited | 9.7K | 524.3K | 5 |
| AS48954GB | ArrowNET AIMES Management Services Ltd | 9.7K | — | 24 |
| AS199909GB | ELITETELE ELITETELE.COM PLC | 9.7K | — | 8 |
| AS39767GB | SARGASSO-AS Sargasso N1 Limited | 9.7K | 524.3K | 6 |
| AS202038GB | INTERCITY-TECH-UKCORE Intercity Technology Ltd | 9.7K | — | 15 |
| AS198550GB | nodehost-as NODE HOST LIMITED | 9.7K | — | 37 |
| AS215703GB | FREAKHOSTING FREAKHOSTING LTD | 9.5K | 1 | 38 |
| AS47890GB | UNMANAGED-DEDICATED-SERVERS UNMANAGED LTD | 9.5K | 4 | 41 |
| AS8683GB | NOMINET Nominet UK | 9.5K | 34.6K | 19 |
| AS21439GB | MORGAN-STANLEY Morgan Stanley & Co. International PLC | 9.5K | — | 6 |
| AS12678GB | BADOO-U Badoo Trading Limited | 9.5K | 512 | 22 |
| AS61373GB | CTW Connect The World Ltd. | 9.2K | — | 21 |
| AS29646GB | FFastFill-AS FFastFill Europe Limited | 9.2K | — | 5 |
| AS60064GB | HOSTPALACE HOSTPALACE DATACENTERS LTD | 9.2K | 590.8K | 35 |
| AS57002GB | WHORGLTD William Hill Organization Ltd | 9.2K | — | 22 |
| AS41357GB | UK-34SP-AS 34SP.com Limited | 9.2K | 65.5K | 5 |
| AS205394GB | CSLDUAL-AS CSL (DualCom) Limited | 9K | 852K | 23 |
| AS30803GB | TRIDENT-NET Trident Net Limited | 9K | — | 3 |
| AS205434GB | Elasticity BE SLOUGH DC UK LIMITED | 9K | — | 14 |
| AS16212GB | LORAL-SKYNET-ASN Telesat International Ltd | 9K | — | 15 |
| AS35266GB | EXN-AS EX Networks Limited | 8.7K | 589.8K | 19 |
| AS8676GB | PRTSYSTEMS PRT Systems Limited | 8.7K | 393.2K | 10 |
| AS29676GB | GRADWELL Gradwell Communications Limited | 8.7K | — | 14 |