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Data as of Nov 4, 2026

185.52.172.0/24

No anonymizer space · no proxy exits in 30 days

ISP Alliance a.s.

Announcement
this exact prefix
RPKI valid
Announced by
AS47232
Type
Residential
88% of it

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
185.52.172.0/23
since Aug 2016
AS202131Residential14
1 always on
ISP Alliance a.s.

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
185.52.172.0/23512CZ-GRAPESC-20140402ISP Alliance a.s. (ORG-GSA22-RIPE) · CZALLOCATED PAFeb 17, 2017[email protected]
└ 185.52.172.0 - 185.52.172.7172ISPAllianceISP Alliance a.s.ASSIGNED PAAug 22, 2020[email protected]
└ 185.52.172.72/298TwigoNetTwigoNet Europe, SE (ORG-TES23-RIPE)ASSIGNED PAAug 22, 2020[email protected]
└ 185.52.172.80 - 185.52.172.15980ISPAllianceISP Alliance a.s.ASSIGNED PAAug 22, 2020[email protected]
└ 185.52.172.160/298TwigoNetTwigoNet Europe, SE (ORG-TES23-RIPE)ASSIGNED PAAug 22, 2020[email protected]
└ 185.52.172.168 - 185.52.172.20740ISPAllianceISP Alliance a.s.ASSIGNED PAAug 22, 2020[email protected]
└ 185.52.172.208/2816TwigoNetTwigoNet Europe, SE (ORG-TES23-RIPE)ASSIGNED PAAug 22, 2020[email protected]
└ 185.52.172.224/2732ISPAllianceISP Alliance GGCASSIGNED PAAug 22, 2020[email protected]

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

256 addresses
TypeAddressesShareRanges
Residential22488%4
Business3213%3

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS47232

CZ
Name
ISP Alliance a.s.
Type
Internet provider
Registered
May 21, 2008
Domain
ispalliance.cz
Website
www.ispalliance.cz
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed