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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 |
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| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS211658GB | STRATUS_AS Unity World Ltd | — | — | 0 |
| AS214602GB | DATACENTER-CLUSTER-FL-AS FIRST SERVER LIMITED | — | 65.5K | 1 |
| AS218748GB | OSCAR-BRADLEY Oscar Lewis Bradley | — | 4.1K | 1 |
| AS205649GB | TOSLER-NET Shaun Tosler | — | 1 | 1 |
| AS199799GB | SOUNDMOUSE Soundmouse Ltd | — | — | 0 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS211386GB | LINX-ROUTE-SERV-AZURE London Internet Exchange Ltd. | — | — | 0 |
| AS214749GB | PAW James Cahill | — | 7 | 7 |
| AS203880GB | HEBNET Hebnet CIC | — | — | 0 |
| AS198768GB | OASISINFO-AS OASIS INFOTECH LIMITED | — | 2 | 2 |
| AS203850GB | Arkessa Arkessa Limited | — | — | 0 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS61024GB | ISP-BACKBONE-LTD Cloud Unboxed Limited | — | — | 0 |
| AS58148GB | IRONSIDE Ironside Systems Ltd. | — | 1 | 1 |
| AS62979GB | IIX-GAIIX-RS - IX Reach Ltd | — | — | 0 |
| AS201616GB | theoh-as Theo Holroyd | — | 2 | 2 |
| AS51287GB | CONSENSUSONE-NOC-AS BITNIFTY LTD | — | — | 0 |
| AS213507GB | SKYQUANTUM-TELECOM SKYQUANTUM TELECOM LTD. | — | 1M | 32 |
| AS201280GB | five9uk FIVE9 INC UK LIMITED | — | — | 0 |
| AS218839GB | ZONEKTELECOM-AS ZONEK TELECOM LTD | — | 11 | 11 |
| AS8844GB | COMMUNITY GTT - EMEA Ltd. | — | — | 0 |
| AS213434GB | GALACTIX Rhys Woolcott | — | 17 | 2 |
| AS57688GB | BT-PSN-AS British Telecommunications Limited | — | — | 0 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS43433GB | MICROFROST Christopher Frost | — | — | 0 |
| AS56758GB | CR0BAR Cr0bar Limited | — | 6 | 6 |
| AS213436GB | NIUZI_DADA_CLOUD NIUZI DADA CLOUD LIMITED | — | 1K | 1 |
| AS48961GB | WarwickNet Glide Student & Residential Limited | — | 65.5K | 1 |
| AS43157GB | URBANWIMAX-NET Telcom Networks Limited | — | — | 0 |
| AS219526GB | Jakenet Jake Turner | — | 1 | 1 |
| AS8689GB | POWERNETUK Digital Space Group Limited | — | — | 0 |
| AS218776GB | FULLFIBER FULLFIBER LTD | — | 4 | 4 |
| AS219032GB | PapilioHost Papilio Host Ltd | — | — | 0 |
| AS204291GB | pinguin Thomas McLoughlin | — | 337 | 7 |
| AS219022GB | FREEVPN FREE VPN GLOBAL LTD | — | — | 0 |
| AS200499GB | EHL-AS Enterprises Holding LTD | — | 1 | 1 |
| AS59839GB | BROMLEYNET Bromleynet Limited | — | — | 0 |
| AS199519GB | THATGUYJACK-NET Jack Brierley | — | 9 | 9 |
| AS60788GB | VARIDION Gamma Network Solution Limited | — | — | 0 |
| AS142290GB | AGARTHATELEKOMLTD-AS-AP - AGARTHA TELEKOM LTD | — | 1 | 1 |
| AS50697GB | ACSN-AS Reliance Cyber Ltd | — | — | 0 |
| AS210338GB | PIXSAL-AS Kieran Breeze | — | 3 | 3 |
| AS211224GB | JB3 Joseph Banks | — | 17 | 2 |
| AS218940GB | KUMO2 Tealight Ltd | — | 1 | 1 |
| AS209417GB | TIANHAI-EU Tianhai Infotech Ltd | — | — | 0 |