MAINFRAME & CYBERNETIC SYSTEMS LIMITED
Data as of 2026-08-16
BGP inherited
Cluster stats
| Netblocks | 72 · 51,715 IPv4 addresses |
| IPv6 | 5 prefixes (largest 2001:9d8::/29) |
| Registered in | United Kingdom (91) · Netherlands (1) · Turkey (1) |
| Cluster ID | 222401314 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 15 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
8 weekly snapshots · JSON
98
-1 netblocks since 2026-07-05
2026-07-05
peak 99
2026-08-16
IP Ranges (72)
showing 50 of 72 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 5.57.80.217/32 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | PEERINGDB | ASSIGNED | ● high |
| 193.169.90.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● high |
| 195.66.224.201/32 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | PEERINGDB | ASSIGNED | ● high |
| 195.66.236.201/32 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:4::63e9:1/128 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:4:1::63e9:1/128 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:17::63e9:1/128 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | PEERINGDB | ASSIGNED | ● high |
| 5.133.184.0/22 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 5.133.188.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 5.133.191.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 31.3.208.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 31.3.211.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 31.3.212.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 31.3.221.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 31.3.223.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 37.58.24.0/22 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 37.58.29.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 62.69.143.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 77.73.11.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 77.73.15.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 78.40.56.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 78.40.61.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.64.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.66.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.72.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.75.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.76.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.80.0/22 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.81.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.87.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.88.0/22 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.88.0/21 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.92.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.92.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.94.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 81.27.95.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 82.197.72.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 84.45.8.0/21 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 84.45.16.0/20 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 84.45.32.0/19 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 84.45.64.0/18 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 84.45.75.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 85.159.88.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 85.159.90.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 85.159.95.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 109.68.64.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 109.68.68.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 109.104.96.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 109.104.98.0/24 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
| 109.104.100.0/23 | MAINFRAME & CYBERNETIC SYSTEMS LIMITED | BGP | ANNOUNCED | ● medium |
IPv6 ranges (5)
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: D
how networks compare →
24.5%
of checked blocks have valid RPKI ROA coverage
(24 of 98)
Possible discrepancies (2)
These blocks are registered to MAINFRAME & CYBERNETIC SYSTEMS LIMITED but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 31.3.217.0/24 /24 | authorized for AS200468 — ALVAREZ & MARSAL DISPUTES AND INVESTIGATIONS LLP |
| 62.69.143.0/24 /24 | authorized for AS14618 — Amazon.com, Inc. |
NIC Handles
AS25577
AS25577
AS49503
BUNKER-MNT
C4L-MNT
C4l-MNT
DUMY-RIPE
DUMY-RIPE
IDEGROUP-MNT
ORG-MCSL9-RIPE
RIPE-NCC-END-MNT
RIPE-NCC-HM-MNT
+3 more