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InternetData
IPv4 address

81.31.47.114

An address in Prague, Czechia, announced by MasterDC s.r.o. (AS24971). It's hosting space of MasterDC and a mail server on port 587.

Summary

  • HostingMasterDC

No mobile carrier, anycast or CDN

  • SMTPPort 587

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
Currency
CZK
Name
Koruna
Symbol
CZK

Ownership

Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.

Company
MasterDC s.r.o.
Domain
master.cz
Type
Hosting
Registered in
Czechia
AS number
AS24971
Name
MasterDC s.r.o.
Prefix
81.31.32.0/20
RPKI
Valid
Type
Hosting
Domain
master.cz
Registered in
Czechia
Name
Petr Bydzovsky housing TTC Praha
Network name
PETR-BYDZOVSKY-CZ-MAI
Status
ASSIGNED PA
Registry
RIPE NCC
Domain
masterinter.net
Name
MasterDC contact
Phone
+420777919484
Address
MasterDC s.r.o, Purkynova 3030/35e, 612 00 Brno, Czech Republic
Network
81.31.32.0-81.31.47.255
Not seen inIP RWHOISIP RDNS

Anonymity

Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.

Provider
MasterDC
Confidence
High
Last seen
2026-11-02

Network

What kind of network it is on: a mobile carrier, a satellite operator, an anycast service, a CDN edge.

Services

What our own internet-wide measurement found listening on it.

Port
587
Banner
220 smarthost.rozhled.cz ESMTP MailServer
Greeting
Completed
First seen
2026-08-30
Last seen
2026-10-23
00 · Evaluate

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01 · License

Then license what you use.

Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell, priced by scope rather than by seat.
Annual terms, a named contact, and monthly, quarterly or yearly payment.