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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.
3,134 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 | 368 |
| AS212238GB | CDNEXT Datacamp Limited | 1.1M | 4,290 |
| — |
| 7 |
| 7 |
| AS204789GB | BizbetaLTD BIZBETA LTD | — | 69.2K | 19 |
| AS211956GB | JOSH-ASN Joshua Powell | — | 4.1K | 1 |
| AS200371GB | freedomsatuk Bentley-Walker Limited | — | 1 | 1 |
| AS57110GB | AARAN-CLOUD-AS Aaran Perry | — | 257 | 2 |
| AS205909GB | Phystrax-Network Phystrax Ltd | — | 64 | 1 |
| AS210961GB | SIGN4 Nathan York | — | 1 | 1 |
| AS205058GB | MAEEKO MAGICAL NETWORK LIMITED | — | 5 | 4 |
| AS213436GB | NIUZI_DADA_CLOUD NIUZI DADA CLOUD LIMITED | — | 1K | 1 |
| AS214160GB | SHREE Shreejal Maharjan | — | 3 | 3 |
| AS48961GB | WarwickNet Glide Student & Residential Limited | — | 65.5K | 1 |
| AS204994GB | BAHAMUT-ZONE Luke Seabrook | — | 1 | 1 |
| AS47326GB | KTT-CARRIER-ASN KTT Carrier Limited | — | 65.6K | 3 |
| AS200198GB | DSMTech DSM (GB) Limited | — | 16 | 1 |
| AS218748GB | OSCAR-BRADLEY Oscar Lewis Bradley | — | 4.1K | 1 |
| AS215527GB | XERONET Xero Networks LTD | — | 7 | 7 |
| AS215368GB | CONNORMCF Connor McFarlane | — | 1 | 1 |
| AS208699GB | ParsnsNetwork Leo Shum | — | 6 | 4 |
| AS198657GB | GOHEGAN-NET Kai Gohegan | — | 257 | 2 |
| AS49962GB | ALUE-NET ALUE LTD | — | 2 | 2 |
| AS213650GB | CDNINFRA-AS CDN Infra Limited | — | 16 | 1 |
| AS201824GB | stat-cons-as STAT CONSULTING LTD | — | 1 | 1 |
| AS212121GB | VAGUE James Ray | — | 5 | 5 |
| AS213897GB | BUBBLES-AS BUBBLES ALTER LIMITED | — | 1 | 1 |
| AS219441GB | NEKONODE NEKONODE LTD | — | 2 | 2 |
| AS44754GB | SPACEMINE-AS SpaceMine Ltd | — | 1 | 1 |
| AS218839GB | ZONEKTELECOM-AS ZONEK TELECOM LTD | — | 11 | 11 |
| AS207529GB | NyanLoliNetwork NYANLOLI LTD | — | 573 | 14 |
| AS209600GB | AS209600 Livefix Technical Solutions Group Limited | — | 32 | 2 |
| AS43336GB | ASPIXIE PIXIE NETWORKS LTD | — | 524.3K | 1 |
| AS211035GB | PHANTOM-HIVE-AS PHANTOM HIVE NETWORK LTD | — | 2 | 2 |
| AS25085GB | ALUE-NET ALUE LTD | — | 10 | 10 |
| AS205383GB | PERRYNET Rhys Perry | — | 1 | 1 |
| AS17626GB | YNL-AS-AP - Yasuda Network LTD | — | 1 | 1 |
| AS59566GB | LogicForge LogicForge Limited | — | 8.2K | 1 |
| AS9786GB | XIANDOUCLOUD1-AS-AP - XIANDOUCLOUD INFORMATION TECHNOLOGY LTD | — | 1 | 1 |
| AS215158GB | SIXNET-OP2 Sixnet Operation Ltd | — | 65.5K | 1 |
| AS47509GB | WT70-AS Wai-Wah Tang | — | 10 | 8 |
| AS214749GB | PAW James Cahill | — | 7 | 7 |
| AS219127GB | risman RISMAN LIMITED | — | 524.3K | 1 |
| AS200754GB | SHADOWRHYTHM-AS SHADOWRHYTHM LIMITED | — | 3 | 3 |
| AS56758GB | CR0BAR Cr0bar Limited | — | 6 | 6 |
| AS215768GB | Infected-Systems Alex Haydock | — | 1 | 1 |
| AS35528GB | THOMSON-REUTERS Thomson Reuters (Professional) UK Ltd | — | — | 0 |
| AS213092GB | marbleis Acrion International Limited | — | 28 | 13 |
| AS213262GB | Moe-Network Moe Overflow Electric Limited | — | 22 | 6 |
| AS41255GB | Alanyhq-Networks-AS Alanyhq Networks Limited | — | 1 | 1 |