IP WHOIS Lookup
Look up registration and network information for IP addresses using WHOIS
IP Whois
T-Mobile USA, Inc. XX (NET-167-20-0-0-1) 167.20.0.0 - 167.20.255.255 Nextel Communications NEXTEL-IRV-MOBILES-167-20-140 (NET-167-20-140-0-1) 167.20.140.0 - 167.20.143.255