Loading…
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.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS5089GB | NTL Virgin Media Limited | 23M | 299 |
| AS2856GB | BT-UK-AS British Telecommunications Limited | 18.5M | 555 |
| AS13285GB | OPALTELECOM-AS TalkTalk Communications Limited | 7.7M | 99 |
| AS786GB | JANET Jisc Services Limited | 7.2M | 222 |
| AS5607GB | BSKYB-BROADBAND-AS Sky UK Limited | 6.9M | 80 |
| AS5378GB | Vodafone Limited | 2.8M | 24 |
| AS6871GB | Plusnet British Telecommunications Limited | 2.1M | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 172 |
| AS212238GB | CDNEXT Datacamp Limited | 1.2M | 4,613 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 404 |
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.
3,143 autonomous systems registered to United Kingdom. Click an AS for detail.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS56335GB | NOCSULT Nocsult Ltd | 512 | — | 2 |
| AS59410GB | BARRITEC Barritel Ltd | 512 | 65.5K | 3 |
| AS34623GB | Netegral Astutium Limited | 512 | 1 | 2 |
| AS208915GB | HyperLink HYPERLXC MEDICAL LTD | 512 | 65.5K | 6 |
| AS203011GB | osgcloud OSG CLOUD LIMITED | 512 | — | 2 |
| AS211675GB | LAYERSHIFT-NETWORKS Layershift Limited | 512 | 65.5K | 2 |
| AS30769GB | BERKELEY-AS The Berkeley Group plc | 512 | — | 1 |
| AS214557GB | hostmenow HOSTMENOW LTD | 512 | — | 2 |
| AS197342GB | Aepona-BFS PERSISTENT SYSTEMS UK LIMITED | 512 | — | 2 |
| AS34930GB | HAL LHR AIRPORTS LIMITED | 512 | — | 2 |
| AS210203GB | RETN-IT-AS RETN Limited | 512 | — | 1 |
| AS219335GB | COREVANCE-AS COREVANCE LTD | 512 | — | 2 |
| AS213534GB | GardnersBooks Gardners Books Ltd | 512 | — | 2 |
| AS51222GB | CMC-MARKETS-PLC CMC MARKETS PLC | 512 | — | 2 |
| AS200950GB | CalibourNetwork Calibour Limited | 512 | 66.4K | 16 |
| AS200682GB | TLC-ASN Trustees of the London Clinic Limited | 512 | — | 2 |
| AS50287GB | AudatexUK Audatex (UK) Ltd | 512 | 16 | 3 |
| AS218774GB | UC-AS uno Ltd. | 512 | 65.5K | 2 |
| AS218642GB | LL-AS LETECHAI LTD | 512 | — | 2 |
| AS210924GB | SSDNetworks SSD Networks Limited | 512 | 524.3K | 3 |
| AS213549GB | SATISFYHOST SATISFYHOST LTD | 512 | 3 | 5 |
| AS209765GB | AspireMedia ASPIRE MEDIA GROUP LIMITED | 512 | — | 2 |
| AS198142GB | Warrington-AS Warrington Borough Council | 512 | — | 2 |
| AS201478GB | REDI_TECH Refinitiv Limited | 512 | — | 2 |
| AS50656GB | Optix-Software-ASN Optix Software Ltd | 512 | — | 2 |
| AS204624GB | sycurio Sycurio Limited | 512 | — | 2 |
| AS41751GB | OCADO OCADO RETAIL LIMITED | 512 | — | 1 |
| AS208026GB | LITTLEWOODS LITTLEWOODS LTD | 512 | — | 2 |
| AS199794GB | EMO-AS EMOCLOUD LTD | 512 | 528 | 5 |
| AS49958GB | EVO-AS Evolution Gaming LTD | 512 | — | 2 |
| AS58102GB | TWODMEDIA 2Dmedia Ltd. | 512 | 1 | 2 |
| AS199706GB | BLOCK-AS Block Solutions Ltd | 512 | — | 2 |
| AS211431GB | AndrewA Andrew Aubury | 512 | 369 | 11 |
| AS25050GB | BACS-AS VOCALINK LTD | 512 | — | 1 |
| AS51692GB | HyberHost Steven Smith trading as HyberHost | 512 | 33 | 5 |
| AS200623GB | NetBlazer-Ltd NetBlazer Ltd | 512 | 2 | 4 |
| AS207900GB | uk_northrop_2 Northrop Grumman UK Limited | 512 | — | 2 |
| AS199301GB | SOLUTIONS-AS RLE SOLUTIONS LTD | 512 | — | 2 |
| AS202310GB | hyve-corp Hyve Ltd | 512 | 2 | 2 |
| AS31743GB | IPGGIS-UK-AS Interpublic GIS (UK) Ltd | 512 | 524.3K | 3 |
| AS216307GB | HYPERHOST-AS Hyperhost Solutions Limited | 512 | 1 | 3 |
| AS43259GB | LEIDOS-UK Leidos Innovations UK LTD | 512 | — | 2 |
| AS218641GB | TEECEEY-TECH_AS TEECEEY-TECH LTD | 512 | — | 2 |
| AS197213GB | NINETY-ONE-TELECOM 91TELECOM LTD | 512 | 17 | 4 |
| AS43851GB | LWBNET Etheroute Ltd | 512 | 1 | 3 |
| AS50632GB | NU-COLO-NET Fish.Net Limited | 512 | — | 1 |
| AS203767GB | CLARITAS-A Claritas Solutions Limited | 512 | — | 2 |
| AS219185GB | NARWHAL-NETTECH NARWHAL NETTECH LIMITED | 512 | 3 | 5 |
| AS203251GB | AlchemySystems Alchemy Systems International Limited | 512 | — | 1 |
| AS214315GB | CUSHWAKE-IRE Cushman & Wakefield Debenham Tie Leung Limited | 512 | — | 2 |