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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 |
| 1.8K |
| 65.5K |
| 5 |
| AS198386GB | ONI THRIVE OPERATIONS LIMITED | 1.8K | — | 4 |
| AS29474GB | GHOTI-AS Ghoti Limited | 1.8K | — | 4 |
| AS49418GB | AS-NETSHIELD NETSHIELD LTD | 1.8K | 67 | 11 |
| AS49911GB | AS-CDNSQUARED CDN Squared Limited | 1.8K | 524.3K | 8 |
| AS48273GB | ESSENSYS ESSENSYS (UK) Ltd. | 1.8K | — | 7 |
| AS202454GB | PINE-MEDIA Pine Media Ltd | 1.8K | — | 7 |
| AS48866GB | NETCRACKER-EMEA-AS Netcracker Technology EMEA Limited | 1.8K | — | 7 |
| AS42944GB | TICKETMASTER-EU Ticketmaster UK Limited | 1.8K | — | 7 |
| AS57228GB | AXIANS-UK-AS Axians Networks Limited | 1.8K | — | 7 |
| AS48412GB | pod Podsystem Limited | 1.5K | — | 3 |
| AS203177GB | PINNACA BCS Global Networks Limited | 1.5K | — | 6 |
| AS60228GB | C24-AS Six Degrees Technology Group Limited | 1.5K | 98.3K | 4 |
| AS59445GB | ICC-AS ICC NETWORKS LTD | 1.5K | — | 3 |
| AS44706GB | ASN-SPACTRON Monty UK Global Limited | 1.5K | — | 6 |
| AS59803GB | cceip DATAQUEST (HEATHROW) LIMITED | 1.5K | — | 2 |
| AS64435GB | comgw The Communication GATEWAY LTD | 1.5K | 65.5K | 4 |
| AS206300GB | YUNYOO YUNYOO LTD | 1.5K | 4 | 9 |
| AS29214GB | HOUSES-OF-PARLIAMENT THE HOUSE OF COMMONS | 1.5K | — | 5 |
| AS60103GB | ACCESSPT Accesspoint Technologies Ltd | 1.5K | — | 3 |
| AS202978GB | XIRIA Xiria Ltd | 1.5K | 524.3K | 3 |
| AS35832GB | BGFL Birmingham City Council | 1.5K | — | 5 |
| AS41379GB | NTA-AS Nationwide Telephone Assistance Ltd | 1.5K | — | 3 |
| AS47768GB | INTISTELECOM-AS UK Intis Telecom LTD | 1.5K | 1 | 4 |
| AS205091GB | EuroNet EuroNet Internet Ltd | 1.5K | 524.3K | 7 |
| AS60464GB | SUPERNET-UK SUPERNET UK LIMITED | 1.5K | — | 6 |
| AS199455GB | ARQWIFI Virgin WiFi Ltd | 1.5K | — | 3 |
| AS205842GB | LINKWEBSOLUTIONS Link Web Solutions LLP | 1.5K | — | 3 |
| AS211091GB | IPHOUSE I P House Limited | 1.5K | — | 6 |
| AS44371GB | PPN Paypoint Network Limited | 1.5K | — | 6 |
| AS58144GB | ASN-TSC THE STREAMING COMPANY.COM LIMITED | 1.5K | — | 3 |
| AS200164GB | RHG-AS The Random House Group Limited | 1.5K | — | 3 |
| AS210667GB | SMISHCRAFT Adam Goodenough | 1.5K | 18 | 24 |
| AS215089GB | FASTPANDA Fast Panda Limited | 1.5K | — | 6 |
| AS215047GB | Theonebroadband DSV Communications Limited | 1.5K | 524.3K | 6 |
| AS12761GB | COLT-CORP-IT COLT Technology Services Group Limited | 1.5K | — | 6 |
| AS201579GB | HOSTGNOME-AS HOSTGNOME LTD | 1.5K | 528.4K | 8 |
| AS42513GB | NATILIK-AS Natilik Ltd | 1.5K | — | 4 |
| AS204592GB | COSMOS-AS Cosmos Wireless Ltd | 1.5K | — | 6 |
| AS50132GB | WRG-AS 3nt solutions LLP | 1.5K | — | 6 |
| AS35180GB | HIPCOM-AS Broadsoft LTD | 1.5K | 2 | 8 |
| AS60038GB | TAMG TripAdvisor Limited | 1.5K | — | 3 |
| AS60868GB | BRANDWATCH-AS Runtime Collective Limited | 1.5K | 65.5K | 4 |
| AS44934GB | ARACHSYS Arachsys Internet Services Ltd | 1.5K | 65.5K | 5 |
| AS210980GB | MANTA-TECH MANTA TECH LTD | 1.5K | — | 6 |
| AS41355GB | CATALYST2-RDG Team Blue Carrier Limited | 1.5K | 65.5K | 4 |
| AS202147GB | VPSUS VPSUS LTD | 1.5K | 1 | 7 |