AS25577 MAINFRAME & CYBERNETIC SYSTEMS LIMITED
A network in United Kingdom. Here are the size of its IP ranges and the data used for visitor checks.
Visitor check data
- Network type
- Regular network
- Known VPN servers
- None
- Tor exit nodes
- None
This network mainly serves home, office and mobile lines. VPN servers are counted only when they are on the public list. How checks work
Addresses by country
United Kingdom47,656 addresses
Türkiye512 addresses
Netherlands512 addresses
Germany256 addresses
Congo - Brazzaville216 addressesLargest IPv4 ranges
Up to 20, largest first (40 in total).
84.45.51.0 ~ 84.45.127.255
84.45.32.0 ~ 84.45.49.255
84.45.16.0 ~ 84.45.29.255
81.27.87.0 ~ 81.27.95.255
84.45.8.0 ~ 84.45.14.255
5.133.184.0 ~ 5.133.189.255
109.104.122.0 ~ 109.104.127.255
37.58.24.0/22
81.27.80.0/22
109.104.116.0/22
185.5.88.0/22
31.3.211.0 ~ 31.3.213.255
78.40.56.0/23
81.27.66.0/23
81.27.72.0/23
81.27.75.0 ~ 81.27.76.255
85.159.90.0/23
109.68.64.0/23
109.104.100.0/23
178.251.238.0/23
Data: DB-IP (CC BY 4.0), public VPN server list, Tor Project exit list · as of 2026-10-12