With domain-check you can search in more than 1500 top-level domains (TLD) and second-level domains (SLD), if the domain is free or registered. When the domain name is registered, the domain-checker shows domain name information like ownership, administrative contact and currently used nameservers (DNS). You can also lookup multiple top level domains for your search term (multi domaincheck), search for information about top level-domains (top level-domain lookup), lookup ip addresses (IPv4 and IPv6) and you can inform about your currently used ip-address (ip address locator).