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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 |
| 1.3K |
| 65.5K |
| 3 |
| AS39584GB | LGIM Legal & General Investment Management Holdings Ltd | 1.3K | — | 5 |
| AS25048GB | DSNet DSNET Ltd | 1.3K | 196.6K | 10 |
| AS47572GB | TICKETMASTER-EU2 Ticketmaster UK Limited | 1.3K | — | 5 |
| AS42909GB | COMMUNITYDNS Community DNS Limited | 1.3K | 3 | 8 |
| AS203258GB | UCNS-AS UCNS Limited | 1.3K | — | 5 |
| AS215128GB | iONLINE-ISP-UK IONLINE INTERNET SOLUTIONS PROVIDER LTD | 1.3K | 524.3K | 5 |
| AS48444GB | INTER-NET-UK Internet Ltd | 1.3K | — | 5 |
| AS206733GB | BFC-HK Beeks Financial Cloud Ltd | 1.3K | — | 5 |
| AS206490GB | SOUTHENDBC-AS Southend-on-Sea City Council | 1.3K | — | 2 |
| AS200418GB | Uk-Dao Victor Connect Ltd. | 1.3K | — | 4 |
| AS215759GB | Ziax Ziax Ltd | 1.3K | 2 | 7 |
| AS59820GB | Astro Astro Communications LTD | 1.3K | — | 2 |
| AS216167GB | Gamma-GCE Gamma Telecom Holdings Ltd | 1.3K | — | 5 |
| AS213737GB | DexDC AYOSOFT LTD | 1.3K | 2 | 7 |
| AS198362GB | nethuk2 NETH LTD | 1.3K | — | 5 |
| AS202052GB | CTS-GROUP CTS Group Ltd | 1.3K | — | 2 |
| AS43924GB | IQUO IQUO LIMITED | 1.3K | — | 4 |
| AS48901GB | DSNET-CSP DSNET Ltd | 1.3K | 65.5K | 5 |
| AS28959GB | VITOL-AS Vitol Services Ltd | 1.3K | — | 5 |
| AS62417GB | DIGITALK_CLOUD_THW DIGITALK Limited | 1.3K | — | 5 |
| AS211058GB | threatspike-cloud-uk ThreatSpike Labs Limited | 1.3K | — | 5 |
| AS216180GB | WHG-AUS WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS198426GB | Voneus Voneus Ltd | 1.3K | — | 2 |
| AS206232GB | AcuityUC Acuity Unified Communications Limited | 1.3K | — | 5 |
| AS49657GB | TNSI Transaction Network Services (UK) LTD | 1.3K | — | 4 |
| AS204978GB | dmalagon LOBOS NETWORKING LTD | 1.3K | — | 2 |
| AS207310GB | cinos Cinos Communications Services Limited | 1.3K | — | 5 |
| AS198895GB | ApexBroadband Techade Ltd | 1.3K | 524.3K | 6 |
| AS51031GB | StarNetwork w1n ltd | 1.3K | 258 | 7 |
| AS210206GB | METROSECURITY-AS Metro Security (GB) PLC | 1.3K | 589.8K | 6 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1.3K | 2 | 7 |
| AS197651GB | THEHUTGROUPLIMITED FIC SHARECO LIMITED | 1.3K | — | 2 |
| AS211126GB | WHG-MEX WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS60962GB | BZ Foreign and Commonwealth Office | 1.3K | — | 3 |
| AS25588GB | SIXDEGREES-CLOUD-AS Six Degrees Technology Group Limited | 1.3K | — | 4 |
| AS47549GB | HOSTINGSYSTEMS-AS Hosting Systems Ltd | 1.3K | — | 5 |
| AS47823GB | NHL-AS2 Netwise Hosting Ltd | 1.3K | — | 2 |
| AS39602GB | TCG-AS The Cent.re Group Limited | 1.3K | 524.3K | 5 |
| AS206069GB | CORNSEED Cornseed Limited | 1.3K | 2 | 6 |
| AS58349GB | INNETRA-AS Elna Paulette Valentin trading as INNETRA PC | 1.3K | — | 4 |
| AS205996GB | Interfiber Interfiber Ltd | 1.3K | 65.5K | 3 |
| AS208697GB | KMSL-AS Kellogg Management Services (Europe) Limited | 1.3K | — | 5 |
| AS211844GB | SWATER-ASN Southern Water Services Ltd | 1.3K | — | 5 |
| AS205311GB | Cambridge_Fibre_Networks Cambridge Fibre Networks Ltd. | 1.3K | 524.3K | 3 |
| AS203851GB | as_csd001 CSD Network Services Ltd | 1.3K | — | 5 |
| AS24633GB | XICON BCN Group Hosting Ltd | 1.3K | — | 2 |