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.
BGP Network & Carrier
BGP Autonomous System (ASN)
Unknown ISP
Query IP Address
139.12.0.0
Reverse DNS (PTR)
Not Resolved
Country / Region
DE
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
139.12.0.1
→
139.12.255.254
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
AA-LAN
Network Type / Status
LEGACY
Registry Owner & Contacts
Sponsoring Organization / Owner
DE-COLT-MNT
DE-COLT-MNT
Allocated
1970-01-01T00:00:00Z
Last Updated
12.08.2026
Abuse / Security Contact
Registry ID / Handle
139.12.0.0 - 139.12.255.255
Admin Contact
JW4877-RIPE
ADMIN
Joerg Winterstein
+49 30 8353 85821
Tech Contact
JW4877-RIPE
TECH
Joerg Winterstein
+49 30 8353 85821