IP WHOIS Lookup
Look up registration and network information for IP addresses using WHOIS
IP Whois
AT&T Enterprises, LLC ATT (NET-12-0-0-0-1) 12.0.0.0 - 12.255.255.255 CONCEPT BROKERAGE INC CONCEPT-74-129-208 (NET-12-211-129-208-1) 12.211.129.208 - 12.211.129.215