AS25577 MAINFRAME & CYBERNETIC SYSTEMS LIMITED 🇬🇧 GB
Announcing 53 prefixes, seen at the RIS collectors.
IPv4 prefixes
52
54,784 (214 × /24)
IPv6 prefixes
1
1 × /32
Upstreams
4
transit providers observed
Peers
16
settlement-free adjacencies
Downstreams
9
transit customers observed
Customer cone
19
ASes reachable through it
Registry and operator data
- AS number
- AS25577
- Name
- MAINFRAME & CYBERNETIC SYSTEMS LIMITED
- Organisation
- MAINFRAME & CYBERNETIC SYSTEMS LIMITED
- Country
- 🇬🇧 GB
- RIR
- RIPENCC
- Allocated
- 2003-01-15
- Network type
- NSP
- Traffic levels
- 10-20Gbps
- Scope
- Europe
- Peering policy
- Selective
- IRR as-set
- AS-C4L
- Website
- http://bec.uk
- Looking glass
- https://lg.as25577.net
- PeeringDB
- net/1540
- Exchanges
- 3
- Facilities
- 25
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
53 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 5.133.184.0/22 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 5.133.188.0/23 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 5.133.191.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 31.3.208.0/24 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 31.3.211.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 31.3.212.0/23 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 31.3.221.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 31.3.223.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 37.58.24.0/22 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 37.58.29.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 77.73.11.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 77.73.15.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 78.40.56.0/23 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 78.40.61.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.64.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.66.0/23 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.72.0/23 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.75.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.76.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.80.0/22 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.81.0/24 v4 | no ROA | 42 | 14907322325577 | 2026-09-18 |
| 81.27.87.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.88.0/21 v4 | no ROA | 42 | 34549325725577 | 2026-09-18 |
| 81.27.88.0/22 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.92.0/23 v4 | no ROA | 42 | 34549325725577 | 2026-09-18 |
| 81.27.92.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.94.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 81.27.95.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 82.197.72.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 84.45.8.0/21 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 84.45.16.0/20 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 84.45.32.0/19 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 84.45.64.0/18 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 84.45.75.0/24 v4 | no ROA | 42 | 14907322325577 | 2026-09-18 |
| 85.159.88.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 85.159.90.0/23 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 85.159.95.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 109.68.64.0/23 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 109.68.68.0/24 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 109.104.96.0/23 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 109.104.98.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 109.104.100.0/23 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 109.104.105.0/24 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 109.104.112.0/24 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 109.104.114.0/24 v4 | RPKI valid | 42 | 3454925577 | 2026-09-18 |
| 109.104.116.0/22 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 109.104.120.0/21 v4 | no ROA | 42 | 34549325725577 | 2026-09-18 |
| 109.104.122.0/23 v4 | RPKI valid | 41 | 5030025577 | 2026-09-18 |
| 109.104.124.0/22 v4 | no ROA | 41 | 5030025577 | 2026-09-18 |
| 178.251.233.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 178.251.239.0/24 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 185.5.88.0/22 v4 | no ROA | 42 | 3454925577 | 2026-09-18 |
| 2001:9d8::/32 v6 | RPKI valid | 34 | 3772125577 | 2026-09-18 |