AS25577
MAINFRAME & CYBERNETIC SYSTEMS LIMITED ISP registered in United Kingdom
54IPv4 prefixes
1IPv6 prefixes
22%RPKI-valid
#1,677AS Rank
327/327RIS visibility
#69Rank in United Kingdom
2003-01-15Allocated
MAINFRAME & CYBERNETIC SYSTEMS LIMITED (AS25577) — ISP, registered in United Kingdom. announces 54 IPv4 prefixes + 1 IPv6 prefixes. Rank in United Kingdom: #69. Allocated: 2003-01-15.
IPv4 54IPv6 1
Announced prefixes · 55
- v4 84.45.8.0/21 unknown
- v4 85.159.88.0/24 unknown
- v4 85.159.90.0/23 unknown
- v4 85.159.95.0/24 unknown
- v6 2001:9d8::/32 valid
RPKI: rpki.cloudflare.com · 2026-06-19
Routing: 55 IPv4 · 1 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-19
Prefix history
Data table
| Day | Announced prefixes |
|---|---|
| 2026-06-12 | 55 |
| 2026-06-13 | 55 |
Internet Exchanges · 3
Facilities · 25
- Bournemouth Data Centre Bournemouth
- Digital Realty London LHR19 London
- Digital Realty London LHR20 London
- Digital Realty London LHR21 (closed) London
- Digital Realty London LON1-3 London
- Equinix LD3 - London, Park Royal London
- Equinix LD4 - London, Slough Slough
- Equinix LD5 - London, Slough Slough
- Equinix LD8 - London, Docklands London
- Equinix LD9 - London, Powergate London
- Equinix MA1 - Manchester, Williams/Kilburn Manchester
- Global Switch London East London
- Global Switch London North London
- Options IT - Park Royal Datacenter (PRDC) London
- Pulsant Croydon LN-1 Croydon
- Pulsant Maidenhead SE-2 Maidenhead
- Pulsant Milton Keynes SE-1 Milton Keynes
- QiComm Tutis Point London
- Redcentric London Data Centre London
- Telehouse - London (Docklands East) London
- Telehouse - London (Docklands North) London
- VIRTUS LONDON1 (Enfield) London
- VIRTUS LONDON2 (Hayes) Hayes
- VIRTUS LONDON4 (Slough) Slough
- Verne London London
AS topology · Customer cone 19
Peers · 100
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