81.0.199.252
An address in Prague, Czechia, used by Internet Partner s.r.o., announced by CASABLANCA INT a.s. (AS15685). Of our anonymity, network and probe databases, it is in Hosting IP and SMTP IP.
8 of 21 address-keyed databases hold it
- Location
- Prague, Czechia
- Company
- Internet Partner s.r.o.
- Network
- AS15685 CASABLANCA INT a.s.
- Prefix
- 81.0.199.0/24
- Hostname
- smtp-252.onlinehosting.cz
- Registered to
- Internet Partner s.r.o.
- Network type
- Hosting
- Abuse contact
- abuse@casablanca.cz
- Anycast
- No
Anonymity
Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.
Ownership
Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.
- AS number
- AS15685
- Name
- CASABLANCA INT a.s.
- Prefix
- 81.0.199.0/24
- RPKI
- valid
- Type
- Hosting
- Domain
- casablanca.cz
- Registered in
- Czechia
- Name
- Internet Partner s.r.o.
- Handle
- InternetPartner-CZ
- Status
- ASSIGNED PA
- Registry
- ripe
- Domain
- casablanca.cz
- Name
- Casablanca INT RIPE manager
- abuse@casablanca.cz
- Phone
- +420 270 000 277
- Address
- Casablanca INT, Vinohradska 184, Prague 3 - 130 52, Czech republic
- Network
- 81.0.199.0-81.0.199.255
Geolocation
Where the address is, and what that place uses.
- City
- Prague
- Region
- Prague
- Postal code
- 110 00
- Country
- Czechia
- Continent
- Europe
- Coordinates
- 50.0880, 14.4208
- Timezone
- Europe/Prague
Network
What kind of network it is on: a mobile carrier, an anycast service, a CDN edge.
Probe
What our own internet-wide measurement found listening on it.
- Port
- 587
- Banner
- 220 smtp3.onlinehosting.cz ESMTP
- Greeting
- Completed
- First seen
- 2026-07-25
- Last seen
- 2026-10-07
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.