Data as of Nov 12, 2026

81.0.231.0/24

No anonymizer space · no proxy exits in 30 days

CASABLANCA INT a.s.

Announcement

this exact prefix

RPKI valid

Announced by

AS15685

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
81.0.230.0 - 81.0.243.255	3,584	CZ-CASABLANCA-20011214	CASABLANCA INT a.s. (ORG-CI1-RIPE) · CZ	ALLOCATED PA	Jul 28, 2022	abuse@casablanca.cz
└ 81.0.231.0/29	8	AwinIT-CZ	awin IT, s. r. o.	ASSIGNED PA	Jun 1, 2018	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.8/29	8	Active24-CZ	ACTIVE 24, s.r.o.	ASSIGNED PA	Sep 19, 2014	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.48/29	8	Aliaweb-CZ	AliaWeb, spol. s r.o.	ASSIGNED PA	Oct 27, 2009	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.56/29	8	PhotonEnergyOperationsCZ-CZ	Photon Energy Operations CZ s.r.o.	ASSIGNED PA	Sep 20, 2013	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.96/28	16	OMAXHolding-CZ	OMAX Holding s.r.o.	ASSIGNED PA	Mar 12, 2012	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.128/29	8	CZ99-CZ	CZ 99, s.r.o.	ASSIGNED PA	Apr 22, 2011	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.192/29	8	MudrTomasKostrhun-CZ	MUDr. Tomas Kostrhun	ASSIGNED PA	Oct 14, 2014	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.208/29	8	Varicad-CZ	VARICAD, spol. s r.o.	ASSIGNED PA	Nov 2, 2009	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.224/29	8	MOBILBONUS-CZ	Mobilbonus s.r.o.	ASSIGNED PA	Dec 14, 2004	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.232/29	8	Maincube-CZ	Maincube s.r.o.	ASSIGNED PA	Nov 2, 2009	abuse@casablanca.cz via CZ-CASABLANCA-20011214
└ 81.0.231.248/29	8	CASABLANCAINT-CZ	Casablanca INT	ASSIGNED PA	Nov 2, 2009	abuse@casablanca.cz via CZ-CASABLANCA-20011214

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

Routing timeline

Who has announced this prefix

Summary

Routing history

Pattern: Stable
First seen: May 2025
Current origin since: May 2025 · 1.5 yr
Origin networks: 1

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
81.0.231.0/24	AS15685	/24	RIPE	RPKI valid
81.0.230.0/23	AS15685	/23	RIPE	Too specific

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS15685	RIPE	Casablanca INT prefix fraction	CASABLANCA-CORE-MNT	Jun 30, 2017