Data as of Nov 7, 2026

91.143.105.0/24

No anonymizer space · no proxy exits in 30 days

Citycom Telekommunikation GmbH

Announcement

RPKI valid

Announced by

Type

Business

Risk

0 / 100 · Low

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
91.143.96.0/20	4,096	AT-GSTW-20061031	Citycom Telekommunikation GmbH (ORG-GSA1-RIPE) · AT	ALLOCATED PA	Oct 31, 2006	abuse@grazkom.at
└ 91.143.105.0 - 91.143.105.23	24	CITYCOM-AT-NET-01	Citycom Telekommunikation GmbH	ASSIGNED PA	Nov 17, 2011	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.24/29	8	WINDHEILEO-AT-NET-01	Windheimat GmbH	ASSIGNED PA	Sep 16, 2025	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.32/28	16	PRIMESIGN_WG2-AT-NET-01	PrimeSign GmbH	ASSIGNED PA	Feb 12, 2019	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.48/28	16	PRIMESIGN_WG2-AT-NET-02	PrimeSign GmbH	ASSIGNED PA	Feb 12, 2019	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.80/28	16	CORTI-AT-NET-01	Corti & Partner GmbH	ASSIGNED PA	May 14, 2008	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.96/28	16	PERNTHALER-AT-NET-01	Pernthaler DI Architekt ZT GmbH	ASSIGNED PA	May 26, 2008	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.112/29	8	OVIVO-AT-NET-01	Ovivo Austria GmbH	ASSIGNED PA	Jan 15, 2025	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.128/28	16	TIPAG-AT-NET-01	Dedalus HealthCare Ges.m.b.H. SSC Accounts Payable - DHG	ASSIGNED PA	Feb 10, 2025	abuse@grazkom.at via AT-GSTW-20061031
└ 91.143.105.176/28	16	PARAGRAPH-AT-NET-01	Paragraph-Software GmbH	ASSIGNED PA	Jun 26, 2008	abuse@grazkom.at via AT-GSTW-20061031

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

Announced by

Origin network

RPKI

ROA prefix	ASN	Max len	Anchor	Verdict
91.143.96.0/20	AS29056	/24	RIPE	RPKI valid

IRR

Origin	Registry	Description	Maintainer	Modified
AS29056	RIPE	Citycom Telekommunikation GmbH	CITYCOM-AT-MNT	Feb 5, 2026