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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 |
| 1.3K |
| 524.3K |
| 3 |
| AS39602GB | TCG-AS The Cent.re Group Limited | 1.3K | 524.3K | 5 |
| AS215128GB | iONLINE-ISP-UK IONLINE INTERNET SOLUTIONS PROVIDER LTD | 1.3K | 524.3K | 5 |
| AS211167GB | ITFARM IT Farm Limited | 1.3K | — | 5 |
| AS207765GB | Transit-Networks-Limited Transit Networks Limited | 1.3K | — | 5 |
| AS48901GB | DSNET-CSP DSNET Ltd | 1.3K | 65.5K | 5 |
| AS3232GB | ORG-ML847-RIPE ModernColo LP | 1.3K | — | 5 |
| AS62417GB | DIGITALK_CLOUD_THW DIGITALK Limited | 1.3K | — | 5 |
| AS207019GB | TNCL Clouvider Limited | 1.3K | — | 5 |
| AS41103GB | CLEARIP-AS teleBIZZ Ltd | 1.3K | 65.5K | 4 |
| AS211393GB | VITRIFINET Vitrifi Limited | 1.3K | 524.3K | 3 |
| AS49657GB | TNSI Transaction Network Services (UK) LTD | 1.3K | — | 4 |
| AS207310GB | cinos Cinos Communications Services Limited | 1.3K | — | 5 |
| AS24633GB | XICON BCN Group Hosting Ltd | 1.3K | — | 2 |
| AS211844GB | SWATER-ASN Southern Water Services Ltd | 1.3K | — | 5 |
| AS215304GB | SOLREN SOLREN LIMITED | 1.3K | — | 5 |
| AS209082GB | SWLINES Swlines Ltd | 1.3K | 1 | 6 |
| AS31050GB | FRAMESTORE The Framestore Limited | 1.3K | — | 5 |
| AS59817GB | OXLETECH Oxletech Limited | 1.3K | 65.5K | 5 |
| AS56540GB | CONSENSUSONE-AS BITNIFTY LTD | 1.3K | — | 4 |
| AS199828GB | Inet-Plc-AS NUSO CLOUD UK LIMITED | 1.3K | — | 2 |
| AS204978GB | dmalagon LOBOS NETWORKING LTD | 1.3K | — | 2 |
| AS48444GB | INTER-NET-UK Internet Ltd | 1.3K | — | 5 |
| AS212633GB | EE-Mobile EE Mobile Telecom Ltd | 1.3K | 524.3K | 6 |
| AS205719GB | FORESTSNET-AS FORESTSNET LTD | 1.3K | 2 | 7 |
| AS50132GB | WRG-AS 3nt solutions LLP | 1.3K | — | 5 |
| AS31631GB | ELEVATE Telcom Networks Limited | 1.3K | 524.3K | 3 |
| AS49882GB | SKRILL Paysafe Holdings UK Limited | 1.3K | — | 2 |
| AS59717GB | ARCO-AS Arco Limited | 1.3K | 524.3K | 3 |
| AS48704GB | AS-FRESHWAVE Freshwave Services Limited | 1.3K | 1M | 7 |
| AS47549GB | HOSTINGSYSTEMS-AS Hosting Systems Ltd | 1.3K | — | 5 |
| AS60962GB | BZ Foreign and Commonwealth Office | 1.3K | — | 3 |
| AS196674GB | SPEEDFLOW-AS Speedflow Communications Ltd | 1.3K | 1 | 6 |
| AS50807GB | INSPIRETEC-ASN Inspiretec LTD | 1.3K | — | 4 |
| AS206733GB | BFC-HK Beeks Financial Cloud Ltd | 1.3K | — | 5 |
| AS58349GB | INNETRA-AS Elna Paulette Valentin trading as INNETRA PC | 1.3K | — | 4 |
| AS25048GB | DSNet DSNET Ltd | 1.3K | 196.6K | 9 |
| AS2129GB | HP-EUROPE-AS-TRADE EntServ UK Limited | 1.3K | — | 2 |
| AS198895GB | ApexBroadband Techade Ltd | 1.3K | 524.3K | 6 |
| AS210310GB | PCT-Pure-IP Daisy Communications Ltd | 1.3K | — | 2 |
| AS199456GB | VLDTECH-ASN VALID TECHNOLOGY L.P. | 1.3K | 32.8K | 7 |
| AS59820GB | Astro Astro Communications LTD | 1.3K | — | 2 |
| AS206223GB | Teledyne-UK Teledyne Limited | 1.3K | — | 2 |
| AS206232GB | AcuityUC Acuity Unified Communications Limited | 1.3K | — | 5 |
| AS28959GB | VITOL-AS Vitol Services Ltd | 1.3K | — | 5 |
| AS47823GB | NHL-AS2 Netwise Hosting Ltd | 1.3K | — | 2 |
| AS216180GB | WHG-AUS WHG Hosting Services Ltd | 1.3K | — | 5 |