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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 |
| 1.3K |
| — |
| 5 |
| AS48444GB | INTER-NET-UK Internet Ltd | 1.3K | — | 5 |
| AS47823GB | NHL-AS2 Netwise Hosting Ltd | 1.3K | — | 2 |
| AS34407GB | WAVECREST-AS01 Wavecrest Networks Limited | 1.3K | 524.3K | 3 |
| AS49882GB | SKRILL Paysafe Holdings UK Limited | 1.3K | — | 2 |
| AS211126GB | WHG-MEX WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS207310GB | cinos Cinos Communications Services Limited | 1.3K | — | 5 |
| AS60962GB | BZ Foreign and Commonwealth Office | 1.3K | — | 3 |
| AS206733GB | BFC-HK Beeks Financial Cloud Ltd | 1.3K | — | 5 |
| AS215468GB | LOCKBOX LOCKBOX NETWORKS LLP | 1.3K | — | 5 |
| AS213737GB | DexDC AYOSOFT LTD | 1.3K | 2 | 7 |
| AS42909GB | COMMUNITYDNS Community DNS Limited | 1.3K | 3 | 8 |
| AS196674GB | SPEEDFLOW-AS Speedflow Communications Ltd | 1.3K | 1 | 6 |
| AS203354GB | VIEWSAT-AS Viewsat ltd. | 1.3K | — | 2 |
| AS210310GB | PCT-Pure-IP Daisy Communications Ltd | 1.3K | — | 2 |
| AS206069GB | CORNSEED Cornseed Limited | 1.3K | 3 | 7 |
| AS48704GB | AS-FRESHWAVE Freshwave Services Limited | 1.3K | 1M | 7 |
| AS205545GB | E-WIRE JIWA Holdings Ltd | 1.3K | — | 2 |
| AS49937GB | INTERACTIVESPORTS Interactive Sports Limited | 1.3K | — | 5 |
| AS210062GB | BARRITEL-LON-THN Barritel Ltd | 1.3K | 65.5K | 5 |
| AS47318GB | WMAS West Midlands Ambulance Service NHS Foundation Trust | 1.3K | — | 4 |
| AS212701GB | HOSTINUX-AS Hostinux Limited | 1.3K | 1 | 6 |
| AS198362GB | nethuk2 NETH LTD | 1.3K | — | 5 |
| AS204978GB | dmalagon LOBOS NETWORKING LTD | 1.3K | — | 2 |
| AS209318GB | NEBIC North East Business and Innovation Centre Limited | 1.3K | 589.8K | 4 |
| AS198895GB | ApexBroadband Techade Ltd | 1.3K | 524.3K | 6 |
| AS216167GB | Gamma-GCE Gamma Telecom Holdings Ltd | 1.3K | — | 5 |
| AS59817GB | OXLETECH Oxletech Limited | 1.3K | 65.5K | 5 |
| AS58349GB | INNETRA-AS Elna Paulette Valentin trading as INNETRA PC | 1.3K | — | 4 |
| AS208697GB | KMSL-AS Kellogg Management Services (Europe) Limited | 1.3K | — | 5 |
| AS215304GB | SOLREN SOLREN LIMITED | 1.3K | — | 5 |
| AS56540GB | CONSENSUSONE-AS BITNIFTY LTD | 1.3K | — | 4 |
| AS205311GB | Cambridge_Fibre_Networks Cambridge Fibre Networks Ltd. | 1.3K | 524.3K | 3 |
| AS24705GB | ECOM-SPARE Single Mode Networks Ltd | 1.3K | — | 2 |
| AS210667GB | SMISHCRAFT Adam Goodenough | 1.3K | 18 | 23 |
| AS2129GB | HP-EUROPE-AS-TRADE EntServ UK Limited | 1.3K | — | 2 |
| AS43924GB | IQUO IQUO LIMITED | 1.3K | — | 4 |
| AS210206GB | METROSECURITY-AS Metro Security (GB) PLC | 1.3K | 589.8K | 6 |
| AS199856GB | Ping-Telecommunications Ping Technology Labs LTD | 1.3K | 524.3K | 6 |
| AS213513GB | COMPUTLE Computle Limited | 1.3K | 524.3K | 6 |
| AS44745GB | FIDESSA-AS Fidessa PLC | 1.5K | — | 4 |
| AS59803GB | cceip DATAQUEST (HEATHROW) LIMITED | 1.5K | — | 2 |
| AS206049GB | COMMUNICATE Communicate Technology LTD | 1.5K | 262.1K | 4 |
| AS58144GB | ASN-TSC THE STREAMING COMPANY.COM LIMITED | 1.5K | — | 3 |
| AS201755GB | SQUIZUK Squiz UK Limited | 1.5K | — | 4 |
| AS59445GB | ICC-AS ICC NETWORKS LTD | 1.5K | — | 3 |
| AS205091GB | EuroNet EuroNet Internet Ltd | 1.5K | 524.3K | 7 |