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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 | 170 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS212238GB | CDNEXT Datacamp Limited | 976.9K | 4,012 |
| 2.3K |
| 65.5K |
| 4 |
| AS198554GB | DXI-AS 8X8 UK Limited | 2.3K | — | 6 |
| AS33970GB | M247 M247 Ltd | 2.3K | — | 6 |
| AS35327GB | NAGLOTECH Naglotech Limited | 2.3K | 1 | 6 |
| AS201101GB | NATSEN-NC NATS (En Route) Ltd | 2.3K | — | 7 |
| AS50605GB | Radius Radius Communications Ltd | 2.3K | — | 9 |
| AS50385GB | HALOCLOUD-NETWORK HaloCloud Network Limited | 2.3K | 2.4K | 17 |
| AS60670GB | WideFM-LTD WideFM Ltd | 2.3K | 524.3K | 10 |
| AS203919GB | LifeinCloud-AS LUMADOCK LTD | 2.3K | — | 9 |
| AS8330GB | LONAP LONAP Ltd | 2.3K | 65.5K | 3 |
| AS44891GB | AS24SEVEN-AS 24 Seven Communications Ltd | 2.3K | 65.5K | 10 |
| AS33921GB | Lebara-AS Lebara Ltd | 2.3K | 256 | 10 |
| AS31151GB | PHG-AS PERFORMANCE HORIZON GROUP LIMITED | 2.3K | — | 9 |
| AS212047GB | CIVO-USA Civo LTD | 2.3K | 65.5K | 3 |
| AS201714GB | LinkIPNetworks Link IP Networks Ltd | 2.3K | — | 6 |
| AS201536GB | SANDYXHOSTING-AS SANDYX SYSTEMS LIMITED | 2.3K | 524.3K | 18 |
| AS29626GB | STAFFSCC Staffordshire County Council | 2.6K | — | 2 |
| AS60464GB | SUPERNET-UK SUPERNET UK LIMITED | 2.6K | — | 10 |
| AS205654GB | ASN-LABTECH Labtech Systems Ltd | 2.6K | — | 8 |
| AS47227GB | SERVOLOGY Charles Briscoe-Smith trading as Servology | 2.6K | 65.5K | 4 |
| AS48688GB | Thales_UK_Ltd Thales UK Ltd | 2.6K | — | 4 |
| AS51100GB | Kier Kier Ltd | 2.6K | — | 7 |
| AS24949GB | BTCML-AXA-AS AXA Technology Services UK Limited | 2.6K | — | 6 |
| AS199717GB | Panoptics Panoptics Global Ltd | 2.6K | — | 10 |
| AS43355GB | GATWICK-AIRPORT GATWICK AIRPORT LIMITED | 2.6K | 589.8K | 8 |
| AS47797GB | ESSEXCC-AS Essex County Council | 2.6K | — | 2 |
| AS203054GB | ORG-TCL96-RIPE TownFibre Connect Ltd | 2.6K | 1 | 11 |
| AS203938GB | SAMUEL-COSGROVE Samuel Cosgrove | 2.6K | — | 7 |
| AS209594GB | IGC-AS IGC Technical Solutions Ltd | 2.6K | 524.3K | 6 |
| AS215638GB | AS-CILIX-LIMITED Cilix Limited | 2.6K | 458.8K | 16 |
| AS47631GB | sipcom-net1 SIP COMMUNICATIONS LIMITED | 2.6K | 65.5K | 11 |
| AS203897GB | ITLAB ADVANIA UK LIMITED | 2.6K | — | 8 |
| AS62172GB | AIRBYTES AIRBYTES COMMUNICATIONS Limited | 2.6K | 262.1K | 14 |
| AS60157GB | ANTHEUS Antheus Telecom Ltd | 2.6K | 4 | 12 |
| AS62246GB | WJY-AS WJY Limited | 2.6K | 1K | 10 |
| AS201902GB | BICOM Bicom Systems Limited | 2.6K | 2 | 8 |
| AS201862GB | VMhosts-London-AS VMhosts Ltd | 2.6K | 65.5K | 8 |
| AS60036GB | DYFED-IT-SOLUTIONS Voneus Ltd | 2.6K | — | 8 |
| AS47716GB | ISIX-CLOUD-AS ISIX Communications LLP | 2.6K | 524.3K | 5 |
| AS209243GB | quickhostuk QuickHostUK Limited | 2.6K | 65.5K | 11 |
| AS203421GB | BALTICBROADBAND-AS Baltic Broadband Limited | 2.6K | — | 4 |
| AS16164GB | SOHONET-AS Sohonet Limited | 2.6K | 65.5K | 4 |
| AS39588GB | MIMECAST-DE Mimecast Services Limited | 2.6K | 2 | 10 |
| AS196962GB | ANTHEIA NSI (Holdings) Limited | 2.6K | 1 | 7 |
| AS205847GB | BORDERLINK GoFibre Holdings Limited | 2.6K | 8.2K | 16 |
| AS51553GB | TelecomPlus Telecom Plus PLC | 2.6K | — | 10 |
| AS208802GB | Netavo Netavo Global Data Services Ltd | 2.6K | 524.3K | 4 |