Data as of Nov 7, 2026

81.27.66.0/23

No anonymizer space · no proxy exits in 30 days

Mainframe & Cybernetic Systems Limited

Announcement

this exact prefix

No RPKI

Announced by

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.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
81.27.66.0/23	512	UK-FRAME-20020411	Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE) · GB	ALLOCATED PA	Mar 3, 2026	frank@bec.uk
└ 81.27.66.24/30	4	PurpleLattice-NET	Purple Lattice Range	ASSIGNED PA	Nov 13, 2009	frank@bec.uk via UK-FRAME-20020411
└ 81.27.66.32/27	32	BLUEPRINTIT-VDS-NET	Blueprint IT VDS network	ASSIGNED PA	May 12, 2010	frank@bec.uk via UK-FRAME-20020411
└ 81.27.66.80/29	8	Secure-Email-Hosting-NET	unknown	ASSIGNED PA	Jun 29, 2021	techadmin@email-checker.com
└ 81.27.67.84/30	4	ESTEEM-VDC-NET	Esteem Systems Ltd	ASSIGNED PA	Sep 10, 2012	frank@bec.uk via UK-FRAME-20020411
└ 81.27.67.96/28	16	FB-NET	Gigler Ltd	ASSIGNED PA	Sep 12, 2012	frank@bec.uk via UK-FRAME-20020411
└ 81.27.67.116/30	4	APPERCEPTION-STORAGE-NET	Apperception	ASSIGNED PA	Oct 24, 2012	frank@bec.uk via UK-FRAME-20020411
└ 81.27.67.120/30	4	FOREX-PDS-NET	Forex Finance LLP	ASSIGNED PA	Sep 7, 2012	frank@bec.uk via UK-FRAME-20020411
└ 81.27.67.176/28	16	Secure-Email-Hosting-NET	unknown	ASSIGNED PA	Jun 29, 2021	techadmin@email-checker.com

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Origin network