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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.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS5089GB | NTL Virgin Media Limited | 23M | 289 |
| AS2856GB | BT-UK-AS British Telecommunications Limited | 18.4M | 543 |
| AS13285GB | OPALTELECOM-AS TalkTalk Communications Limited | 7.7M | 99 |
| AS786GB | JANET - Jisc Services Limited | 7M | 219 |
| AS5607GB | BSKYB-BROADBAND-AS Sky UK Limited | 6.4M | 79 |
| 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 |
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.
| AS | Holder | IPv4 ↓ | IPv6 /48 | Prefixes |
|---|---|---|---|---|
| AS212240GB | RIKNETWORKS RIK Networks Ltd | 768 | — | 3 |
| AS44548GB | CMCMarkets-AS CMC MARKETS PLC | 768 | — | 3 |
| AS207009GB | UK-FUTURE Future Publishing Ltd | 768 | 65.5K | 3 |
| AS8296GB | HBVB HBVB Private Unlimited | 768 | — | 3 |
| AS204777GB | telent telent Technology Services Ltd | 768 | — | 3 |
| AS48090GB | DMZHOST TECHOFF SRV LIMITED | 768 | — | 3 |
| AS209363GB | skinark-as SKINARK LTD | 768 | — | 3 |
| AS201131GB | LGH-Network LIGA HOSTING LTD | 768 | 4 | 7 |
| AS204204GB | uk_point72uklimited Point72 UK Limited | 768 | — | 3 |
| AS203861GB | MITEFLUX-AS Miteflux Technologies Ltd | 768 | 256 | 4 |
| AS48553GB | MARKETAXESS Marketaxess Europe Ltd | 768 | — | 3 |
| AS201226GB | LEASINGOPTIONSLTD-AS Leasing Options Limited | 768 | — | 2 |
| AS210767GB | linkhost Link Host Ltd. | 768 | 524.3K | 4 |
| AS64415GB | CONNECTBIT-AS Ashgoal Limited | 768 | — | 3 |
| AS206798GB | UK-Huawei HUAWEI TECHNOLOGIES(UK)CO.,LTD | 768 | — | 2 |
| AS206499GB | LOCIX LOCIX LIMITED | 768 | 180.5K | 29 |
| AS42853GB | HGCINTL-AS HGC Global Communications (UK) Limited | 768 | — | 2 |
| AS203614GB | NEXTTRANSLATE-AS NEXTTRANSLATE LTD | 768 | — | 3 |
| AS21371GB | EQUINIX-UK-ASN EQUINIX (SERVICES) LIMITED | 768 | — | 2 |
| AS39389GB | GTRL Gibson Thomas Rental Ltd | 768 | — | 2 |
| AS50156GB | BOXED-IT Boxed IT Ltd. | 768 | 1 | 3 |
| AS219141GB | ROCKET-MARINICA ROCKET & MARINICA LTD | 768 | — | 3 |
| AS205900GB | APC-Solutions APC Solutions UK Ltd | 768 | — | 3 |
| AS49744GB | INTUIT-UK Intuit Ltd. | 768 | — | 3 |
| AS34745GB | TELEWARE TeleWare Hosted Services Ltd. | 768 | — | 2 |
| AS201864GB | as-trench MINHOCO 84 LIMITED | 768 | — | 3 |
| AS59907GB | IMSHealth IQVIA SOLUTIONS HQ LTD | 768 | — | 3 |
| AS201409GB | hostshield HOSTSHIELD LTD | 768 | — | 3 |
| AS210627GB | GrayshottGigabit Grayshott Gigabit Limited | 768 | 524.3K | 3 |
| AS60952GB | connexcs Connex Carrier Services (Worldwide) Limited | 768 | — | 3 |
| AS203035GB | xc360 Xara Computers (UK) Ltd | 768 | — | 3 |
| AS35437GB | zonebroadband Zone Telecommunications Ltd | 768 | — | 2 |
| AS203070GB | YAHOO-FRA Yahoo-UK Limited | 768 | 1 | 4 |
| AS209888GB | AERIANDI-AS Aeriandi Limited | 768 | — | 3 |
| AS204844GB | NCSE-NETWORK-Global NCSE NETWORK LTD | 768 | 4.4K | 17 |
| AS201867GB | OXAGON-AS OXAGON LIMITED | 768 | — | 3 |
| AS212406GB | TransFICC TransFICC Ltd. | 768 | — | 3 |
| AS59920GB | LUSORY Lusory Limited | 768 | 4.1K | 4 |
| AS47296GB | HiFX-AS HIFX EUROPE LIMITED | 768 | — | 3 |
| AS212169GB | TECH-RMMINET CARDOCK HOSTING LIMITED | 768 | — | 3 |
| AS206024GB | Far-UK-DualHoming RELX GROUP PLC | 768 | — | 2 |
| AS31202GB | QUALCOMM QUALCOMM (UK) LIMITED | 768 | — | 3 |
| AS206187GB | DIA-ASN Interactive Investor Services Limited | 768 | — | 3 |
| AS219200GB | CRYPHORA-AS Cryphora Limited | 768 | — | 3 |
| AS214663GB | DanBot-Hosting-LTD DanBot Hosting LTD | 768 | 17 | 5 |
| AS200105GB | JUNGLELABS JUNGLELABS LTD | 768 | 9 | 12 |
| AS212890GB | AetherCloud ONEMAN NETWORK LIMITED | 768 | 5 | 8 |
| AS204193GB | Pragma Gamma Telecom Holdings Ltd | 768 | — | 3 |
| AS43428GB | YAHOO-ULS Yahoo-UK Limited | 768 | 1 | 4 |
| AS202787GB | withers-global Withers LLP | 768 | — | 3 |