Whois Check
WHOIS is a TCP-based query/response protocol which is widely used for querying a database in order to determine the owner of a domain name, an IP address, or an autonomous system number on the Internet. The WHOIS system originated as a method that system administrators could use to look up information to contact other IP address or domain name administrators (almost like a "white pages"). (Source : Wikipedia - Whois)
Ask for a domain name with many tld extensions in one single request. Fulfill the underneath text field and choose the desired tld extensions you want to query.