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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 |
| — |
| 1 |
| 1 |
| AS199875GB | EA-ES-MAD Electronic Arts Limited | — | — | 0 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS59621GB | FloNetworks-AS Flo Networks Limited | — | — | 0 |
| AS59893GB | FRC-AS Free Range Cloud Ltd. | — | 4 | 4 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |
| AS196813GB | WAYN LMNEXT UK Limited | — | — | 0 |
| AS218776GB | FULLFIBER FULLFIBER LTD | — | 4 | 4 |
| AS57927GB | UK-KECONNECT Digital Space Group Limited | — | — | 0 |
| AS9786GB | XIANDOUCLOUD1-AS-AP - XIANDOUCLOUD INFORMATION TECHNOLOGY LTD | — | 1 | 1 |
| AS51603GB | ACME-AS Acme Internet Ltd | — | — | 0 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS199186GB | daniel Daniel Thomas Atkinson | — | — | 0 |
| AS29478GB | JUNESTA Karl Dyson | — | 2 | 2 |
| AS199555GB | VM-UK-AS Virgin Money plc | — | — | 0 |
| AS204037GB | qernal Qernal LTD | — | — | 0 |
| AS198064GB | ZEROPACKETS-LTD ZEROPACKETS LTD | — | — | 0 |
| AS216055GB | blue Wren Olivia Wood | — | 1 | 1 |
| AS200279GB | DOUWES-NET Thomas Douwes | — | 5 | 5 |
| AS219157GB | GCS Global Capital Services Ltd. | — | 1 | 1 |
| AS218697GB | itv-studios-uk ITV Services Limited | — | — | 0 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS216115GB | scnc-as Churton LTD | — | — | 0 |
| AS212232GB | BGPTOOLS Port 179 LTD | — | 4 | 4 |
| AS214606GB | LINX-INTERNAL London Internet Exchange Ltd. | — | — | 0 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS50363GB | Gemini-exchange GEMINI PAYMENTS UK, LTD | — | — | 0 |
| AS198801GB | YOUR-HOUSING-GROUP-AS Your Housing Group Ltd | — | — | 0 |
| AS208589GB | uk123lir ANT BM Limited | — | 1 | 1 |
| AS204446GB | HELLOMOUSE Hellomouse Ltd | — | 6 | 6 |
| AS206202GB | NAMESERVERPARTY-AS Faelix Limited | — | 1 | 1 |
| AS60210GB | THIRDCIRCLE-AS Third Circle Ltd | — | — | 0 |
| AS219370GB | Johnson Benjamin Johnson | — | 22 | 7 |
| AS47685GB | ASN-BOGONS-HEAVY-NORTH Bogons Heavy Industries (North) Ltd | — | — | 0 |
| AS206848GB | UKCDN Clouvider Limited | — | 256 | 1 |
| AS34026GB | IXBIRMINGHAM Nuco Technologies Ltd | — | — | 0 |
| AS214514GB | HENRYCLARKE Henry Clarke | — | 16 | 1 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |
| AS207268GB | STREXP STRATEGIC EXPLORATIONS LTD | — | 24 | 6 |
| AS199903GB | NICESYSTEMSUK-E1 NICE SYSTEMS UK LTD | — | — | 0 |
| AS51939GB | TerraMC Terra Management Consulting Ltd | — | 10 | 10 |
| AS218844GB | Shorepath-Telecom Shorepath Telecom Ltd | — | — | 0 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS210164GB | HUMZACJ HumzaCJ LTD | — | — | 0 |
| AS201616GB | theoh-as Theo Holroyd | — | 2 | 2 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 2 | 2 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |