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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 | 168 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 340 |
| AS212238GB | CDNEXT Datacamp Limited | 1M | 4,120 |
| 1.5K |
| — |
| 6 |
| AS196646GB | Datum Datum Datacentres Limited | 1.5K | — | 6 |
| AS35832GB | BGFL Birmingham City Council | 1.5K | — | 5 |
| AS202978GB | XIRIA Xiria Ltd | 1.5K | 524.3K | 3 |
| AS203177GB | PINNACA BCS Global Networks Limited | 1.5K | — | 6 |
| AS215047GB | Theonebroadband DSV Communications Limited | 1.5K | 524.3K | 6 |
| AS210667GB | SMISHCRAFT Adam Goodenough | 1.5K | 18 | 24 |
| AS60103GB | ACCESSPT Accesspoint Technologies Ltd | 1.5K | — | 3 |
| AS50132GB | WRG-AS 3nt solutions LLP | 1.5K | — | 6 |
| AS209082GB | SWLINES Swlines Ltd | 1.5K | 1 | 7 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1.5K | 2 | 8 |
| AS196745GB | DATACENTA-AS Datacenta Hosting Ltd | 1.5K | 10 | 16 |
| AS206300GB | YUNYOO YUNYOO LTD | 1.5K | 4 | 9 |
| AS47768GB | INTISTELECOM-AS UK Intis Telecom LTD | 1.5K | 1 | 4 |
| AS205842GB | LINKWEBSOLUTIONS Link Web Solutions LLP | 1.5K | — | 3 |
| AS199710GB | PERFORM-AS DAZN MEDIA SERVICES LIMITED | 1.5K | 2 | 7 |
| AS205114GB | wrtgltd The WEST Retail group LImited | 1.5K | — | 5 |
| AS49354GB | SIMETRIC TANGO NETWORKS UK LTD | 1.5K | — | 3 |
| AS202147GB | VPSUS VPSUS LTD | 1.5K | 1 | 7 |
| AS29214GB | HOUSES-OF-PARLIAMENT THE HOUSE OF COMMONS | 1.5K | — | 5 |
| AS211844GB | SWATER-ASN Southern Water Services Ltd | 1.3K | — | 5 |
| AS204103GB | commswest Comms West Limited | 1.3K | — | 5 |
| AS204415GB | nexgen NexGen Cloud Ltd | 1.3K | — | 4 |
| AS205311GB | Cambridge_Fibre_Networks Cambridge Fibre Networks Ltd. | 1.3K | 524.3K | 3 |
| AS216405GB | MSUK-ISP Metric Systems UK LTD | 1.3K | 2 | 7 |
| AS206223GB | Teledyne-UK Teledyne Limited | 1.3K | — | 2 |
| AS215128GB | iONLINE-ISP-UK IONLINE INTERNET SOLUTIONS PROVIDER LTD | 1.3K | 524.3K | 5 |
| AS51031GB | StarNetwork w1n ltd | 1.3K | 258 | 7 |
| AS43924GB | IQUO IQUO LIMITED | 1.3K | — | 4 |
| AS42909GB | COMMUNITYDNS Community DNS Limited | 1.3K | 3 | 8 |
| AS25048GB | DSNet DSNET Ltd | 1.3K | 196.6K | 10 |
| AS58349GB | INNETRA-AS Elna Paulette Valentin trading as INNETRA PC | 1.3K | — | 4 |
| AS62417GB | DIGITALK_CLOUD_THW DIGITALK Limited | 1.3K | — | 5 |
| AS216167GB | Gamma-GCE Gamma Telecom Holdings Ltd | 1.3K | — | 5 |
| AS49415GB | VTSL-AS VTSL Ltd | 1.3K | — | 5 |
| AS197651GB | THEHUTGROUPLIMITED FIC SHARECO LIMITED | 1.3K | — | 2 |
| AS25588GB | SIXDEGREES-CLOUD-AS Six Degrees Technology Group Limited | 1.3K | — | 4 |
| AS204978GB | dmalagon LOBOS NETWORKING LTD | 1.3K | — | 2 |
| AS206490GB | SOUTHENDBC-AS Southend-on-Sea City Council | 1.3K | — | 2 |
| AS44314GB | ITSYNERGY ITsynergy Limited | 1.3K | 65.5K | 3 |
| AS39602GB | TCG-AS The Cent.re Group Limited | 1.3K | 524.3K | 5 |
| AS15622GB | uk-frontline Frontline Consultancy and Business Services Limited | 1.3K | — | 4 |
| AS48444GB | INTER-NET-UK Internet Ltd | 1.3K | — | 5 |
| AS9179GB | OFFICENET OfficeNet Systems Limited | 1.3K | — | 2 |
| AS198362GB | nethuk2 NETH LTD | 1.3K | — | 5 |
| AS209274GB | Kraken-Network-ISP Kraken Network ISP LTD | 1.3K | — | 5 |
| AS213737GB | DexDC AYOSOFT LTD | 1.3K | 2 | 7 |