Data as of Nov 3, 2026

81.27.76.0/24

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
81.27.75.0 - 81.27.76.255	512	UK-FRAME-20020411	Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE) · GB	ALLOCATED PA	Mar 3, 2026	[email protected]
└ 81.27.76.48/29	8	AREPO-NET-A	ISP Hosting Database Driven Client Web Sites and Colo Servers	ASSIGNED PA	Jan 15, 2004	[email protected] via UK-FRAME-20020411
└ 81.27.76.128/28	16	NOWMARKETING-VDS-NET	Now Marketing Global Limited (ORG-NMGL2-RIPE)	ASSIGNED PA	Jun 21, 2010	[email protected] via UK-FRAME-20020411
└ 81.27.76.192/26	64	CAST-NET-A	4Cast Ltd.	ASSIGNED PA	Jan 15, 2004	[email protected] via UK-FRAME-20020411

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