IP WHOIS Lookup
Look up registration and network information for IP addresses using WHOIS
IP Whois
Comcast Cable Communications, LLC CCCH-3-34 (NET-71-56-0-0-1) 71.56.0.0 - 71.63.255.255 Comcast Cable Communications Holdings, Inc ATLANTA-CPE-13 (NET-71-56-0-0-2) 71.56.0.0 - 71.56.127.255