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
2001:1458:201:8b::100
Network Provider (ISP / ASN)
AS513 (CERN - CERN - European Organization for Nuclear Research, CH) [CH]
Reverse Hostname (PTR)
No Pointer (PTR) record configured for this IP.
Remote Server Geolocation & Time
Country
Switzerland
Switzerland
Region & City
Geneva, Geneva
Postal Code
1200
Coordinates (Lat / Lon)
46.2052, 6.142
Timezone Mapped
Europe/Zurich
Server Local Time
06:34:55 - 23.09.2026
Allocated RIR Network
RIPE NCC (Europe, Middle East, Central Asia)
Autonomous Owner
CERN - European Organization Nuclear Research
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