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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.
3,132 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 173 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 369 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,286 |
| 1.5K |
| — |
| 3 |
| AS8791GB | FOEHN Kerv Experience Limited | 1.5K | — | 3 |
| AS44706GB | ASN-SPACTRON Monty UK Global Limited | 1.5K | — | 6 |
| AS138177GB | NOMINET-AS-AP-RESMDNS - NOMINET UK | 1.5K | 7 | 13 |
| AS213229GB | MITELIS MITELIS SECURITY LIMITED | 1.5K | 1 | 7 |
| AS205114GB | wrtgltd The WEST Retail group LImited | 1.5K | — | 5 |
| AS41355GB | CATALYST2-RDG Team Blue Carrier Limited | 1.5K | 65.5K | 4 |
| AS60103GB | ACCESSPT Accesspoint Technologies Ltd | 1.5K | — | 3 |
| AS44934GB | ARACHSYS Arachsys Internet Services Ltd | 1.5K | 65.5K | 5 |
| AS203315GB | WebWiz Web Wiz Ltd | 1.5K | 4 | 10 |
| AS196745GB | DATACENTA-AS Datacenta Hosting Ltd | 1.5K | 10 | 16 |
| AS214927GB | PSB-AS PSB HOSTING LTD | 1.5K | 2 | 8 |
| AS47768GB | INTISTELECOM-AS UK Intis Telecom LTD | 1.5K | 1 | 4 |
| AS211392GB | softbank DREAM CLOUD INNOVATION LIMITED | 1.5K | — | 6 |
| AS204321GB | uk-nyt-cdg1 New York Times Limited | 1.5K | — | 3 |
| AS207162GB | l3climited-as L3C Limited | 1.5K | — | 3 |
| AS205545GB | E-WIRE JIWA Holdings Ltd | 1.5K | — | 3 |
| AS202792GB | CLOUD-TRANSIT Clouvider Limited | 1.5K | — | 6 |
| AS44745GB | FIDESSA-AS Fidessa PLC | 1.5K | — | 4 |
| AS201579GB | HOSTGNOME-AS HOSTGNOME LTD | 1.5K | 528.4K | 8 |
| AS205719GB | FORESTSNET FORESTSNET LTD | 1.5K | 2 | 8 |
| AS58144GB | ASN-TSC THE STREAMING COMPANY.COM LIMITED | 1.5K | — | 3 |
| AS60868GB | BRANDWATCH-AS Runtime Collective Limited | 1.5K | 65.5K | 4 |
| AS59445GB | ICC-AS ICC NETWORKS LTD | 1.5K | — | 3 |
| AS209452GB | ZuriTechnologies Zuri Technologies Limited | 1.5K | — | 3 |
| AS29214GB | HOUSES-OF-PARLIAMENT THE HOUSE OF COMMONS | 1.5K | — | 5 |
| AS60228GB | C24-AS Six Degrees Technology Group Limited | 1.5K | 98.3K | 4 |
| AS64435GB | comgw The Communication GATEWAY LTD | 1.5K | 65.5K | 4 |
| AS44371GB | PPN Paypoint Network Limited | 1.5K | — | 6 |
| AS42217GB | GOODWOOD The Goodwood Estate Company Limited | 1.5K | 524.3K | 4 |
| AS216405GB | MSUK-ISP Metric Systems UK LTD | 1.5K | 2 | 8 |
| AS61087GB | DGTL DGTL TECH UK LLP | 1.5K | 33 | 9 |
| AS205842GB | LINKWEBSOLUTIONS Link Web Solutions LLP | 1.5K | — | 3 |
| AS50132GB | WRG-AS 3nt solutions LLP | 1.5K | — | 6 |
| AS59820GB | Astro Astro Communications LTD | 1.3K | — | 2 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1.3K | 2 | 7 |
| AS9179GB | OFFICENET OfficeNet Systems Limited | 1.3K | — | 2 |
| AS210310GB | PCT-Pure-IP Daisy Communications Ltd | 1.3K | — | 2 |
| AS42909GB | COMMUNITYDNS Community DNS Limited | 1.3K | 3 | 8 |
| AS2129GB | HP-EUROPE-AS-TRADE EntServ UK Limited | 1.3K | — | 2 |
| AS205996GB | Interfiber Interfiber Ltd | 1.3K | 65.5K | 3 |
| AS25048GB | DSNet DSNET Ltd | 1.3K | 196.6K | 10 |
| AS43924GB | IQUO IQUO LIMITED | 1.3K | — | 4 |
| AS58349GB | INNETRA-AS Elna Paulette Valentin trading as INNETRA PC | 1.3K | — | 4 |
| AS51031GB | StarNetwork w1n ltd | 1.3K | 258 | 7 |
| AS198362GB | nethuk2 NETH LTD | 1.3K | — | 5 |
| AS206490GB | SOUTHENDBC-AS Southend-on-Sea City Council | 1.3K | — | 2 |