Professional IP Registry Lookup
IP WHOIS Details
Query regional network registries recursively to isolate network ranges, ISP owners, allocations, regional servers, and administrative abuse contacts.
Multiple Mapped IP Addresses Found (2)
This domain resolves to multiple destination addresses. Click on any alternate IP below to run recursive WHOIS lookup on that node:
137.138.6.72
IPv4
(Active)
2001:1458:201:8b::100:23b
IPv6
BGP Network & Carrier
BGP Autonomous System (ASN)
AS513 (CERN - CERN - European Organization for Nuclear Research, CH) [CH]
Query IP Address
137.138.6.72
Reverse DNS (PTR)
lbaas-630cc22c-65d0-4b63-90ae-ea57b4b05b81.cern.ch
Country / Region
CH
Regional Internet Registry (RIR)
ARIN (North America)
Security & Reputation Assessment
USOM Blacklist
Clean — No Active Block in Turkey
Global DNSBL Blacklist Reputation
Spamhaus Zen
Clean
Barracuda BRBL
Clean
UCEPROTECT L1
Clean
Quick Diagnostics & Actions
Subnet Diagnostics
IP Range Span
137.138.0.1
→
137.138.255.254
Subnet Block / Range
CIDR Prefix
/16
IP Version
IPv4
Subnet Mask
255.255.0.0
Total Hosts
65,534
Network Class
Class B
Network Name
CERN-GPN
Network Type / Status
LEGACY
Registry Owner & Contacts
Sponsoring Organization / Owner
CERN-MNT
CERN-MNT
Allocated
1970-01-01T00:00:00Z
Last Updated
14.04.2016
Abuse / Security Contact
Registry ID / Handle
137.138.0.0 - 137.138.255.255
Admin Contact
Tech Contact