ipip.net is an IP lookup website with a database built from BGP/ASN data analysis, renowned for its high accuracy and popularity among network enthusiasts. Its client tool besttrace (formerly 17MONIPDB) is also very handy, and its traceroute feature includes a map display, making it clear and convenient at a glance. It covers everything: IP, response time, location, and AS number.
Attachment Download: http://mirror.cnop.net/tools/besttrace.exe