Data as of Nov 8, 2026
109.104.100.0/23
No anonymizer space · no proxy exits in 30 daysMainframe & Cybernetic Systems Limited
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 109.104.100.0/23 | 512 | UK-FRAME-20090904 | Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE) · GB | ALLOCATED PA | Mar 3, 2026 | frank@ |
| └ 109.104.100.0/24 | 256 | C4LWIFI-NET | C4L Wifi | ASSIGNED PA | Oct 13, 2010 | frank@ via UK-FRAME-20090904 |
| └ 109.104.101.40/29 | 8 | VIADEX-NET | Viadex Limited | ASSIGNED PA | Jul 6, 2017 | frank@ via UK-FRAME-20090904 |
| └ 109.104.101.64/27 | 32 | Transputec-NET | unknown | ASSIGNED PA | Jul 2, 2021 | support@ |
| └ 109.104.101.144/28 | 16 | ALPARI_ | Alpari (UK) Ltd | ASSIGNED PA | Sep 20, 2017 | frank@ via UK-FRAME-20090904 |
| └ 109.104.101.176/28 | 16 | SECUREEMAILHOSTING-STORAGE-NET | Secure Email Hosting Storage Range | ASSIGNED PA | Jun 24, 2021 | techadmin@ |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2025
- Current origin since
- Mar 2025 · 1.7 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 109.
104. 100. 0/ 23 - Netname
- UK-FRAME-20090904
- Registrant
- Mainframe & Cybernetic Systems Limited
- Registrant country
- GB
- Organization
- Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE)
- Org country
- GB
- Type
- ALLOCATED PA
- Created
- Mar 3, 2026
- Updated
- Mar 3, 2026
- Maintainer
- lir-uk-frame-1-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Sep 4, 2009
- Status
- assigned
Report abuse
Abuse contact
- frank@
bec. uk - Name
- Abuse-C Role
- Handle
- AR79596-RIPE