Computer Forensics
AllWhoIsInternet domain search
CentraOps.net Domain Dossier
Investigate domains and IP addresses
Checkdomain.com
Internet domain search
Domain Names
Internet domain search
Domain Tools
Research current and historical domains
ICANN-Accredited Registrars
Officially sanctioned domain registrars
IP-Address.com
Maps computer IP addresses
Netcraft Uptime Survey
What software does this site run?
Network Solutions WHOIS
Research Internet domains
RIPE Whois
Research Internet domains, including free-text search
Who-hosts.com
Who hosts a domain