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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.
3,134 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 | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,290 |
| 1.5K |
| — |
| 6 |
| AS204321GB | uk-nyt-cdg1 New York Times Limited | 1.5K | — | 3 |
| AS205842GB | LINKWEBSOLUTIONS Link Web Solutions LLP | 1.5K | — | 3 |
| AS215047GB | Theonebroadband DSV Communications Limited | 1.5K | 524.3K | 6 |
| AS49354GB | SIMETRIC TANGO NETWORKS UK LTD | 1.5K | — | 3 |
| AS42217GB | GOODWOOD The Goodwood Estate Company Limited | 1.5K | 524.3K | 4 |
| AS201579GB | HOSTGNOME-AS HOSTGNOME LTD | 1.5K | 528.4K | 8 |
| AS198386GB | ONI THRIVE OPERATIONS LIMITED | 1.8K | — | 4 |
| AS196646GB | Datum Datum Datacentres Limited | 1.8K | — | 7 |
| AS48529GB | quantumbeam Quantumbeam Communications Limited | 1.8K | — | 7 |
| AS57228GB | AXIANS-UK-AS Axians Networks Limited | 1.8K | — | 7 |
| AS42237GB | w1n w1n ltd | 1.8K | 655.4K | 17 |
| AS215429GB | Ireland IQVIA SOLUTIONS HQ LTD | 1.8K | — | 3 |
| AS210980GB | MANTA-TECH MANTA TECH LTD | 1.8K | — | 7 |
| AS209505GB | UNCHAINEDISP Unchained ISP Limited | 1.8K | 344.1K | 8 |
| AS48866GB | NETCRACKER-EMEA-AS Netcracker Technology EMEA Limited | 1.8K | — | 7 |
| AS204562GB | ASJavelin JAVELIN BROADBAND LIMITED | 1.8K | 524.3K | 5 |
| AS41099GB | globalreach Global Reach Networks Limited | 1.8K | — | 7 |
| AS208507GB | MitsubishiHC-Capital Mitsubishi HC Capital UK PLC | 1.8K | — | 5 |
| AS203185GB | PebbleTree PEBBLETREE LTD | 1.8K | 3 | 10 |
| AS197246GB | BELGRAVIA-AS BELGRAVIA MEDIA LTD | 1.8K | — | 7 |
| AS41246GB | EMS-AS Electronic Media Services Ltd | 1.8K | — | 4 |
| AS48447GB | Sectigo Sectigo Limited | 1.8K | 65.5K | 5 |
| AS209082GB | SWLINES Swlines Ltd | 1.8K | 1 | 8 |
| AS49911GB | DCNET DCNet Limited | 1.8K | 524.3K | 8 |
| AS201715GB | ineedbr Ineedbroadband Ltd | 1.8K | — | 4 |
| AS48273GB | ESSENSYS ESSENSYS (UK) Ltd. | 1.8K | — | 7 |
| AS210893GB | LAYEREDTECH Layered Technologies Limited | 1.8K | 524.3K | 8 |
| AS198990GB | PINEHOST-NET Pine Hosting LTD | 1.8K | — | 4 |
| AS29474GB | GHOTI-AS Ghoti Limited | 1.8K | — | 4 |
| AS197715GB | Serverbike Serverbike LTD | 1.8K | 2 | 9 |
| AS202454GB | PINE-MEDIA Pine Media Ltd | 1.8K | — | 7 |
| AS219302GB | seally-AS SEALLY LTD | 1.8K | 4 | 11 |
| AS35831GB | VNETRIX-AS Vnetrix Ltd | 1.8K | — | 6 |
| AS207019GB | TNCL Clouvider Limited | 1.8K | — | 7 |
| AS35299GB | ASC2k C2k | 2K | — | 1 |
| AS198850GB | HOGARTH-WORLDWIDE WPP PRODUCTION LIMITED | 2K | — | 1 |
| AS49694GB | UK-FR-MNLTD Masternaut Limited | 2K | 3 | 11 |
| AS201358GB | FNZ-UK FNZ (UK) Ltd | 2K | — | 3 |
| AS210757GB | BSL Blackbird Solutions Limited | 2K | — | 5 |
| AS207158GB | WORLDCDN Clouvider Limited | 2K | — | 8 |
| AS206999GB | oakfordis Oakford Internet Services Ltd | 2K | — | 8 |
| AS60925GB | BPP-ASN BPP Services Limited | 2K | — | 1 |
| AS34350GB | MANGROUP Man Investments Limited | 2K | — | 5 |
| AS205502GB | Inception Inception Hosting Limited | 2K | — | 8 |
| AS205693GB | dvla Driver & Vehicle Licensing Agency | 2K | — | 4 |
| AS204436GB | KUALO-AS Kualo Limited | 2K | 65.5K | 3 |