Data as of Nov 9, 2026

109.104.105.0/24

No anonymizer space · no proxy exits in 30 days

Mainframe & Cybernetic Systems Limited

Announcement

this exact prefix

RPKI valid

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.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
109.104.105.0/24	256	UK-FRAME-20090904	Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE) · GB	ALLOCATED PA	Mar 3, 2026	frank@bec.uk
└ 109.104.105.12/30	4	CBAR-NET	Cumberland Bar	ASSIGNED PA	Feb 3, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.16/28	16	Avius-NET	Avius Experience	ASSIGNED PA	Jan 31, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.32/27	32	Hosts-un-limitet-NET	Hosts Un-Limted	ASSIGNED PA	Jan 28, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.80/30	4	KELWAYMORTGAGEPRO-VDS-NET	Kelway (UK) Limited	ASSIGNED PA	Dec 5, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.84/30	4	C4L-NET	C4L customer	ASSIGNED PA	May 28, 2012	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.88/29	8	CampaginMaster-NET	Campaign Master	ASSIGNED PA	Jun 24, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.96/30	4	MartinDawes-NET	Martin Dawes VDS	ASSIGNED PA	Jan 25, 2012	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.100/30	4	VANMILDERT-VDS-NET	Van Mildert Group virtual server range	ASSIGNED PA	Feb 25, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.104/29	8	SOHOCITI-OFFICE-NET	Sohociti office range	ASSIGNED PA	Feb 21, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.112/28	16	DREAMTEK-SERVERS-NET	Dreamtek dedicated servers range	ASSIGNED PA	Feb 22, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.136/29	8	SYMBIOS-VDS-NET	Symbios virtual servers range	ASSIGNED PA	Apr 18, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.144/28	16	Northcroft-NET	Northcoft Group Ltd	ASSIGNED PA	Mar 16, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.160/27	32	SOLSIS-NET	Solsis Ltd.	ASSIGNED PA	Mar 16, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.192/29	8	ICM-NET	ICM Examing Services Limited	ASSIGNED PA	Mar 17, 2011	frank@bec.uk via UK-FRAME-20090904
└ 109.104.105.208/30	4	BlueChip-NET	BlueChip	ASSIGNED PA	Mar 25, 2011	frank@bec.uk via UK-FRAME-20090904

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

Announcement Routing history RPKI & IRR Whois & abuse

Origin network

AS25577

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

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
109.104.105.0/24	AS25577	/24	RIPE	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS25577	RIPE	C4L	C4L-MNT	Nov 25, 2025

109.104.105.0/24

Registrations in this block

Network & registry

AS25577

Who has announced this prefix

Routing history

Route origin authorizations

Route objects on the exact prefix

Registration for this announcement

Abuse contact