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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 | 63 |
| AS8220GB | COLT COLT Technology Services Group Limited | 1.5M | 171 |
| AS206067GB | H3GUK Hutchison 3G UK Limited | 1.1M | 332 |
| AS8426GB | CLARANET-AS Claranet Limited | 909.3K | 100 |
| 1.3K |
| 524.3K |
| 5 |
| AS62417GB | DIGITALK_CLOUD_THW DIGITALK Limited | 1.3K | — | 5 |
| AS199856GB | Ping-Telecommunications Ping Technology Labs LTD | 1.3K | 524.3K | 6 |
| AS56540GB | CONSENSUSONE-AS BITNIFTY LTD | 1.3K | — | 4 |
| AS202147GB | VPSUS VPSUS LTD | 1.3K | 1 | 6 |
| AS206499GB | LOCIX LOCIX LIMITED | 1.3K | 180.5K | 31 |
| AS196674GB | SPEEDFLOW-AS Speedflow Communications Ltd | 1.3K | 1 | 6 |
| AS49882GB | SKRILL Paysafe Holdings UK Limited | 1.3K | — | 2 |
| AS215304GB | SOLREN SOLREN LIMITED | 1.3K | — | 5 |
| AS201949GB | SEEDTECHNOLOGIES Seed Technologies LTD. | 1.3K | 2 | 7 |
| AS57750GB | NDS-UK Synamedia Limited | 1.3K | 256 | 5 |
| AS48901GB | DSNET-CSP DSNET Ltd | 1.3K | 65.5K | 5 |
| AS205545GB | E-WIRE JIWA Holdings Ltd | 1.3K | — | 2 |
| AS206232GB | AcuityUC Acuity Unified Communications Limited | 1.3K | — | 5 |
| AS211126GB | WHG-MEX WHG Hosting Services Ltd | 1.3K | — | 5 |
| AS213790GB | LimitedNetwork-AS Limited Network LTD | 1.3K | — | 5 |
| AS210062GB | BARRITEL-LON-THN Barritel Ltd | 1.3K | 65.5K | 5 |
| AS205996GB | Interfiber Interfiber Ltd | 1K | 65.5K | 2 |
| AS204236GB | uk-div011 Daniel Ionita | 1K | — | 1 |
| AS208330GB | ASBLX BLX Limited | 1K | — | 1 |
| AS6759GB | IOTX Pelion IoT Limited | 1K | — | 4 |
| AS205106GB | PEASOUP Pea Soup Hosting Limited | 1K | — | 3 |
| AS211912GB | WHG-USE2 WHG Hosting Services Ltd | 1K | — | 4 |
| AS39414GB | BYTEFETCH ByteFetch Ltd | 1K | — | 1 |
| AS215925GB | VPSVAULTHOST VPSVAULT.HOST LTD | 1K | 16 | 5 |
| AS204939GB | TAC-COMMUNICATIONS-UK TAC COMMUNICATIONS LTD | 1K | 524.3K | 2 |
| AS39530GB | parker James Parker | 1K | — | 1 |
| AS209274GB | Kraken-Network-ISP Kraken Network ISP LTD | 1K | — | 4 |
| AS197234GB | stylez STYLEZ AI LTD | 1K | — | 4 |
| AS206984GB | lypy Lypy Limited | 1K | 524.3K | 3 |
| AS56670GB | WSCC-AS West Sussex County Council | 1K | — | 2 |
| AS201506GB | INCITO Incito Limited | 1K | 65.5K | 2 |
| AS209113GB | PRECEDENCE Precedence Technologies Ltd | 1K | — | 3 |
| AS43442GB | PROVU ProVu Communications Ltd | 1K | 1 | 2 |
| AS205052GB | VISIONDATASOLUTIONS Vision Data Solutions LLP | 1K | 524.3K | 3 |
| AS50468GB | CITRUS-AS CITRUS TELECOMMUNICATIONS LTD | 1K | — | 4 |
| AS207511GB | LONDSTOCK-APAC London Stock Exchange PLC | 1K | — | 3 |
| AS213549GB | SATISFYHOST SATISFYHOST LTD | 1K | 2 | 6 |
| AS201277GB | Eloquent-AS Eloquent Technologies Ltd | 1K | 524.3K | 2 |
| AS59439GB | VOICEFACTORY-AS EvolveIP LTD | 1K | 0 | 2 |
| AS44052GB | PRESSCOMPUTER-ASN ICONIC MEDIA SYSTEMS LIMITED | 1K | — | 3 |
| AS199946GB | Ctalk Ctalk Limited | 1K | — | 4 |
| AS201024GB | DATAWEBGLOBAL-AS DATAWEB GLOBAL LP. | 1K | — | 2 |
| AS56637GB | Fixnetix Fixnetix Ltd | 1K | — | 3 |
| AS60237GB | theWestBrom WEST BROMWICH BUILDING SOCIETY FOUNDATION | 1K | — | 1 |
| AS205734GB | TRAPOC Copart UK Limited | 1K | — | 4 |
| AS208765GB | Bulletproof Bullet Proof VPN Ltd | 1K | 524.3K | 5 |