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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 |
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| 0 |
| AS197677GB | BENWELL-AS Mr David John Benwell | — | — | 0 |
| AS199886GB | SB-AS Shetland Broadband LLP | — | — | 0 |
| AS24778GB | Datapipe-UK Rackspace Ltd. | — | — | 0 |
| AS34693GB | CME-AS-LD4-1 CME Operations Limited | — | — | 0 |
| AS197595GB | SEEKAHOST-TECH SEEKAHOST TECHNOLOGIES LTD | — | — | 0 |
| AS9105GB | TISCALI-UK TalkTalk Communications Limited | — | — | 0 |
| AS201696GB | SHAMILNET Shamil Nunhuck | — | — | 0 |
| AS209417GB | TIANHAI-EU Tianhai Infotech Ltd | — | — | 0 |
| AS212479GB | RaziNetwork RAZINETWORK LTD | — | — | 0 |
| AS59608GB | SBPL Sona Business Pvt. Ltd. | — | — | 0 |
| AS47386GB | TRIJITNET-UK TRIJIT LIMITED | — | — | 0 |
| AS31270GB | FMN GCI Network Solutions Limited | — | — | 0 |
| AS215474GB | BIIL-RU-AS BIIL RU LTD | — | — | 0 |
| AS8716GB | ASINCORE Redcentric Solutions Ltd | — | — | 0 |
| AS203276GB | JAMINIT James Cook | — | — | 0 |
| AS8686GB | SYSONLINE Digital Space Group Limited | — | — | 0 |
| AS216115GB | scnc-as Churton LTD | — | — | 0 |
| AS34026GB | IXBIRMINGHAM Nuco Technologies Ltd | — | — | 0 |
| AS15565GB | GTT - EMEA Ltd. | — | — | 0 |
| AS25346GB | Tiscali-AS TalkTalk Communications Limited | — | — | 0 |
| AS212390GB | CentralNic-Anycast-J CentralNic Ltd | — | — | 0 |
| AS43827GB | EnvAgency Environment Agency | — | — | 0 |
| AS199066GB | DATA8-AS Data8 Limited | — | — | 0 |
| AS213163GB | UNET-EU FREE UNLIMITED VPN LTD | — | — | 0 |
| AS49900GB | Betfair-DC1 The Sporting Exchange (Clients) Ltd | — | — | 0 |
| AS60210GB | THIRDCIRCLE-AS Third Circle Ltd | — | — | 0 |
| AS64485GB | ST-UK Mitel Networks Limited | — | — | 0 |
| AS197913GB | CCPG-AS Cadence Networks Ltd | — | — | 0 |
| AS198064GB | ZEROPACKETS-LTD ZEROPACKETS LTD | — | — | 0 |
| AS31459GB | BBC-RD-AS BBC | — | — | 0 |
| AS210277GB | IPXO Internet Utilities Europe and Asia Limited | — | — | 0 |
| AS204711GB | honest Honest Enterprises Ltd. | — | — | 0 |
| AS401583GB | COMBEST - Combest Peak Properties, LLC | — | — | 0 |
| AS15636GB | COLLINGWOOD Collingwood Business Solutions Limited | — | — | 0 |
| AS205586GB | MOIDART BLUE BISCAY LTD | — | — | 0 |
| AS205749GB | Intelligent-Communitycations-125-Ltd INTELLIGENT COMMUNITYCATIONS 125 LTD | — | — | 0 |
| AS49374GB | BFD-IX Konstantin Verba | — | — | 0 |
| AS207663GB | PARKIN Paul Parkin | — | — | 0 |
| AS33860GB | ICAP-UK TP ICAP Management Services Limited | — | — | 0 |
| AS58223GB | JT_Global_Enterprise Sabio Ltd. | — | — | 0 |
| AS199228GB | IHOR-AS IHOR HOSTING LTD | — | — | 0 |
| AS214332GB | IXMidlands-Route-Servers Exascale Ltd | — | — | 0 |
| AS212784GB | Marykirk-com Buchan Consultancy Services Ltd | — | — | 0 |
| AS212791GB | BFC-PA3 Beeks Financial Cloud Ltd | — | — | 0 |
| AS202459GB | CUSHWAKE-UK Cushman & Wakefield Debenham Tie Leung Limited | — | — | 0 |
| AS211900GB | IN8INITY IN8INITY GLOBAL LIMITED | — | — | 0 |