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
123.31.36.235
Network Provider (ISP / ASN)
AS135905 (VNPT-AS-VN - VIETNAM POSTS AND TELECOMMUNICATIONS GROUP, VN) [VN]
Remote Server Geolocation & Time
Country
Vietnam
Vietnam
Region & City
Hanoi, Hanoi
Postal Code
Coordinates (Lat / Lon)
21.0278, 105.834
Timezone Mapped
Asia/Bangkok
Server Local Time
10:36:48 - 15.07.2026
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