AS41230
ASK4 Limited ISP registered in United Kingdom
14IPv4 prefixes
7IPv6 prefixes
100%RPKI-valid
#2,922AS Rank
327/327RIS visibility
#187Rank in United Kingdom
2006-07-05Allocated
ASK4 Limited (AS41230) — ISP, registered in United Kingdom. announces 14 IPv4 prefixes + 7 IPv6 prefixes. Rank in United Kingdom: #187. Allocated: 2006-07-05.
IPv4 14IPv6 7
Announced prefixes · 21
- v4 176.119.145.0/24 valid
- v4 185.134.128.0/22 valid
- v4 185.134.136.0/22 valid
- v4 185.134.136.0/23 valid
- v4 185.134.138.0/24 valid
- v4 185.134.139.0/24 valid
- v4 185.134.144.0/22 valid
- v4 185.198.228.0/22 valid
- v4 213.143.0.0/19 valid
- v4 31.205.0.0/16 valid
- v4 45.154.248.0/22 valid
- v4 45.81.120.0/22 valid
- v4 78.109.176.0/20 valid
- v4 81.23.48.0/20 valid
- v6 2a00:1a10::/29 valid
- v6 2a07:c300::/29 valid
- v6 2a0e:2a40::/29 valid
- v6 2a0e:2ac0::/29 valid
- v6 2a0e:5680::/29 valid
- v6 2a0f:dd00::/29 valid
- v6 2a10:d00::/29 valid
RPKI: rpki.cloudflare.com · 2026-06-17
Routing: 16 IPv4 · 7 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17
Prefix history
Data table
| Day | Announced prefixes |
|---|---|
| 2026-06-12 | 21 |
| 2026-06-13 | 21 |
Internet Exchanges · 6
- LINX LON1 London 100 Gbps
- LONAP London 100 Gbps
- LINX Manchester Manchester 30 Gbps
- IXLeeds Leeds / Western Yorkshire 10 Gbps
- MegaIX Dusseldorf Dusseldorf 10 Gbps
- MegaIX Frankfurt Frankfurt 0 Mbps
Facilities · 7
- ASK4 DC1 - Sheffield Sheffield
- Digital Realty Dusseldorf DUS1-3 Düsseldorf
- Digital Realty Frankfurt FRA1-27 Frankfurt
- Equinix LD8 - London, Docklands London
- Equinix MA1 - Manchester, Williams/Kilburn Manchester
- Equinix MA4 - Manchester, Synergy House Manchester
- Telehouse - London (Docklands North) London
AS topology · Customer cone 9
Peers · 101
Embed this on your site
Badge 
[](https://ipdex.io/asn/AS41230/)
<a href="https://ipdex.io/asn/AS41230/"><img src="https://ipdex.io/badge/asn/41230.svg" alt="AS41230 on ipdex"></a>
Live chart (iframe)
<iframe src="https://ipdex.io/embed/asn/41230" width="680" height="260" frameborder="0" scrolling="no" title="ipdex chart" style="border:0;max-width:100%"></iframe>