Reverse DNS PTR Resolver
Reverse DNS Lookup
Perform a quick Reverse DNS PTR lookup to determine the official system hostname and ISP carrier mapped to any IP address.
Reverse DNS Resolution Details
Target IP Address
217.31.205.0
Network Provider (ISP / ASN)
AS25192 (CZNIC-AS - CZ.NIC, z.s.p.o., CZ) [CZ]
Reverse Hostname (PTR)
No Pointer (PTR) record configured for this IP.
Remote Server Geolocation & Time
Country
Czechia
Czechia
Region & City
Prague, Prague
Postal Code
120 00
Coordinates (Lat / Lon)
50.0755, 14.4378
Timezone Mapped
Europe/Prague
Server Local Time
12:51:30 - 17.06.2026
Allocated RIR Network
RIPE NCC (Europe, Middle East, Central Asia)
Autonomous Owner
NIC I
Live Security Reputation Check
100% Clean Reputation
No spam, botnet attacks, or national threat flags identified for this host.
Spamhaus Zen RBL:
CLEAN
Barracuda Central:
CLEAN
USOM Threat Center:
CLEAN