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
123.16.0.0
Network Provider (ISP / ASN)
AS45899 (VNPT-AS-VN - VNPT Corp, VN) [VN]
Remote Server Geolocation & Time
Country
Vietnam
Vietnam
Region & City
Hanoi, Hanoi
Postal Code
100000
Coordinates (Lat / Lon)
21.0184, 105.8461
Timezone Mapped
Asia/Bangkok
Server Local Time
04:31:29 - 09.07.2026
Allocated RIR Network
APNIC (Asia-Pacific)
Autonomous Owner
Vietnam Posts and Telecommunications Group
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