Whois

Book

Apple Business Contact DNS Find Home Internet Linux Microsoft Office Security Utilities
Blacklist.ie
Check if your IP address is blacklisted
Domain Dossier
Investigate Domains and IP Addresses
EURid
The European Registry of Internet Domain Names
Free Online Network Tools
Traceroute, NSLookup, Dig, Whois Lookup, Ping - IPv6
IEDR
IE Domain Registry
InterNIC
Whois Search
Network Solutions
Domain Names, Domain Name Registration and Web Hosting
RIPE.NET
RIPE Network Coordination Centre
Whois Lookup
Irish Domains