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Data as of Nov 5, 2026

5.133.188.0/23

No anonymizer space · no proxy exits in 30 days

Mainframe & Cybernetic Systems Limited

Announcement
this exact prefix
No RPKI
Announced by
AS25577
Type
Hosting
Risk
50 / 100 · Medium

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
5.133.184.0 - 5.133.189.2551,536UK-FRAME-20120705Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE) · GBALLOCATED PAMar 3, 2026frank@bec.uk
└ 5.133.188.0/24256CNS-VMBOXCommercial Network ServicesASSIGNED PASep 18, 2012frank@bec.uk
via UK-FRAME-20120705
└ 5.133.189.80/298MYRIAD-NETMyriad GroupASSIGNED PAJul 27, 2016frank@bec.uk
via UK-FRAME-20120705
└ 5.133.189.96/2732SDSL-NETSafe Data Storage LtdASSIGNED PAJul 15, 2016frank@bec.uk
via UK-FRAME-20120705
└ 5.133.189.176/2816EmailChecker-NETunknownASSIGNED PAJun 29, 2021techadmin@email-checker.com
└ 5.133.189.192/2816IndigoIndigo Integrated Solutions LimitedASSIGNED PAApr 25, 2014frank@bec.uk
via UK-FRAME-20120705
└ 5.133.189.208/298VirtusDC-NETEye Of EnderASSIGNED PAOct 8, 2014frank@bec.uk
via UK-FRAME-20120705
└ 5.133.189.216/304TurflandFarms-NETTurfland Farms LtdASSIGNED PAApr 3, 2014frank@bec.uk
via UK-FRAME-20120705
└ 5.133.189.224/2732OCEAN-NETOcean Unified Communications LtdASSIGNED PANov 23, 2012frank@bec.uk
via UK-FRAME-20120705

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

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS25577

GB
Name
Mainframe & Cybernetic Systems Limited
Type
Hosting
Registered
Jan 15, 2003
Domain
bec.uk
Website
bec.uk
Spamhaus ASN-DROP
not listed