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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 |
| 512 |
| — |
| 2 |
| AS51983GB | SARGASSO-DE-AS Sargasso N1 Limited | 512 | — | 1 |
| AS207701GB | DataGrid Talia Limited | 512 | 1 | 3 |
| AS200008GB | PIRUM-AS Pirum Systems Limited | 512 | 524.3K | 3 |
| AS41570GB | SSVC-AS BFBS | 512 | — | 2 |
| AS203107GB | Gemini-Exchange GEMINI PAYMENTS UK, LTD | 512 | — | 2 |
| AS43259GB | LEIDOS-UK Leidos Innovations UK LTD | 512 | — | 2 |
| AS41596GB | WGSL-AS Willis Group Services Ltd | 512 | — | 2 |
| AS203923GB | HOYOVERSE-AS HOYOVERSE NETWORK LTD | 512 | 9 | 11 |
| AS204322GB | uk-nyt-lhr1 New York Times Limited | 512 | — | 1 |
| AS213051GB | ZENEX5IVE-US Zenex 5ive Limited | 512 | — | 2 |
| AS202297GB | SKYLON Skylon Solutions Limited | 512 | 65.6K | 8 |
| AS51087GB | BLING-AS Bling Network Ltd | 512 | 1.1K | 23 |
| AS203652GB | IBMUK IBM United Kingdom Limited | 512 | — | 2 |
| AS218774GB | UC-AS uno Ltd. | 512 | — | 1 |
| AS8619GB | closebrothers-as Close Brothers Limited | 512 | — | 2 |
| AS31659GB | Below-Zero Below Zero Hosting Ltd. | 512 | — | 2 |
| AS47571GB | DCMANAGED Digital Craftsmen Ltd. | 512 | — | 2 |
| AS213888GB | CharterDigital-AS CharterDigital Ltd | 512 | — | 2 |
| AS49958GB | EVO-AS Evolution Gaming LTD | 512 | — | 2 |
| AS25050GB | BACS-AS VOCALINK LTD | 512 | — | 1 |
| AS201478GB | REDI_TECH Refinitiv Limited | 512 | — | 2 |
| AS210203GB | RETN-IT-AS RETN Limited | 512 | — | 1 |
| AS197560GB | VDIS Beeks Financial Cloud Ltd | 512 | — | 2 |
| AS199706GB | BLOCK-AS Block Solutions Ltd | 512 | — | 2 |
| AS43178GB | TECHNOLABS Technolabs Networks Ltd. | 512 | — | 1 |
| AS206870GB | bcg-as Brightcloud Ltd | 512 | — | 2 |
| AS219369GB | C2T ConstructInTech Limited | 512 | 2 | 4 |
| AS199720GB | icbcs ICBC Standard Bank PLC | 512 | — | 2 |
| AS216274GB | uk-gigaloch Gigaloch Limited | 512 | 262.1K | 3 |
| AS198071GB | BERCHSOLUTIONS-AS Berch Solutions Limited | 512 | 16 | 3 |
| AS202067GB | advantex Advantex Network Solutions Ltd | 512 | — | 2 |
| AS51692GB | HyberHost Steven Smith trading as HyberHost | 512 | 33 | 5 |
| AS214555GB | Treasury Treasury Limited | 512 | 524.3K | 10 |
| AS57483GB | ICHILTON Ian Chilton | 512 | 14 | 16 |
| AS208755GB | NETWORKABLE Thomas Ferguson | 512 | 17 | 4 |
| AS50419GB | EXASTACK Eye Pea Ltd. | 512 | 1 | 3 |
| AS212152GB | AS-Beazley Beazley Management Limited | 512 | — | 2 |
| AS50972GB | JamieOliver Jamie Oliver Ltd. | 512 | — | 1 |
| AS48682GB | IPSL IP Space Limited | 512 | — | 2 |
| AS214056GB | FUTURETECH Future Technology Group Ltd | 512 | — | 2 |
| AS214260GB | ITCommunications I.T Communications Limited | 512 | — | 2 |
| AS203795GB | uk-fidelis-1-as FIDELIS MARKETING LIMITED | 512 | — | 2 |
| AS214314GB | CUSHWAKE-UK2 Cushman & Wakefield Debenham Tie Leung Limited | 512 | — | 2 |
| AS207173GB | uk_northrop Northrop Grumman UK Limited | 512 | — | 2 |
| AS214453GB | jandutech Beon Core Ltd | 512 | — | 2 |
| AS48761GB | MAXINAMES Maxinames Ltd | 512 | — | 2 |