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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.
3,132 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 64 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 173 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 369 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,286 |
| — |
| 64 |
| 1 |
| AS60788GB | VARIDION Gamma Network Solution Limited | — | — | 0 |
| AS214242GB | Jx Jiaxing Xing | — | 519 | 9 |
| AS214818GB | WILL-WILSON William Wilson | — | — | 0 |
| AS56758GB | CR0BAR Cr0bar Limited | — | 6 | 6 |
| AS213608GB | CONNECTOM CONNECTOM LTD | — | — | 0 |
| AS214749GB | PAW James Cahill | — | 7 | 7 |
| AS206097GB | gameshield GAMESHIELD LIMITED | — | — | 0 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 2 | 2 |
| AS206637GB | IQIP-AS CSL (DualCom) Limited | — | — | 0 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS199507GB | THALES-DNSP Thales UK Limited | — | — | 0 |
| AS202627GB | CARBONDNS Fika Studio Limited | — | 1 | 1 |
| AS212483GB | level86 LEVEL EIGHTY-SIX COMMUNICATIONS LTD | — | 29 | 14 |
| AS213210GB | kingslanding-as Richard-Connon | — | 1 | 1 |
| AS213673GB | WAISE-AS WAISE EUROPE LTD | — | — | 0 |
| AS215022GB | FWLB-networks Jamie Hosker | — | 1 | 1 |
| AS59894GB | INSTINETEUROPE-AS Instinet Europe Ltd | — | — | 0 |
| AS61070GB | CDCW-PWC Pricewaterhousecoopers Services Limited | — | — | 0 |
| AS58223GB | JT_Global_Enterprise Sabio Ltd. | — | — | 0 |
| AS218744GB | AYDAN-AS Aydan Abrahams | — | 1 | 1 |
| AS8897GB | KCOM-SPN KCOM Group Limited | — | — | 0 |
| AS31422GB | AONUK-AS AON UK LIMITED | — | — | 0 |
| AS15917GB | CSC-UK-MWH CSC Computer Sciences Ltd | — | — | 0 |
| AS215002GB | PRISMGG PRISM.GG Limited | — | 80 | 2 |
| AS6675GB | COLT-FRANCE-AS COLT Technology Services Group Limited | — | — | 0 |
| AS198276GB | Lazuline Jordan Robert | — | 2 | 2 |
| AS213112GB | IPMultihome IP Multihome Limited | — | — | 0 |
| AS201616GB | theoh-as Theo Holroyd | — | 2 | 2 |
| AS207734GB | Quika COMMERCIS ME LTD | — | — | 0 |
| AS205909GB | Phystrax-Network Phystrax Ltd | — | 64 | 1 |
| AS401583GB | COMBEST - Combest Peak Properties, LLC | — | — | 0 |
| AS205649GB | TOSLER-NET Shaun Tosler | — | 1 | 1 |
| AS197613GB | NMARSHALL-AS Nicholas Marshall | — | — | 0 |
| AS34202GB | CLOUVIDER-THN2 Clouvider Limited | — | 1 | 1 |
| AS212434GB | ITOGETHER Network Integration Technologies LTD | — | — | 0 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS202107GB | UK-CABINETOFFICE-AS Cabinet Office | — | — | 0 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS202867GB | Sugarnet Voneus Ltd | — | — | 0 |
| AS218839GB | ZONEKTELECOM-AS ZONEK TELECOM LTD | — | 11 | 11 |
| AS205441GB | LUMO Lumo Cloud Limited | — | — | 0 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS218940GB | KUMO2 Tealight Ltd | — | 1 | 1 |
| AS59893GB | FRC-AS Free Range Cloud Ltd. | — | 4 | 4 |
| AS39470GB | ATRIUMNETWORK ICE Data Services Limited | — | — | 0 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 17 | 2 |