Domain Name Checker
- This tool checks if a domain name has been registered with a particular top-level domain (tld) extension. All tld extensions from the Internet Assigned Numbers Authority (IANA, 2015) are supported.
- To use the tool, enter a domain or subdomain name, select a tld group from the selection menu, and submit form.
- For instance, to retrieve domain names registered as "gobierno.tld", where tld belongs to a country from Central or South America, enter [gobierno] and select the [LACNIC] option.
- The tool selection menu lets you check tlds across generics, countries, regions, from Google (2015) and CentralNic (2015), and in alphabetical order.
- To avoid unexpected results, you may want to run one web browser instance of the tool at a time and per machine IP.
- As retrieval time is slaved to the response time of remote hosts, you may want to do other tasks while the tool is working, particularly if submitting a large number of URLs.
- Once you run the tool, you may stop it at any time by clicking twice the tool reset button and waiting a few seconds for the current process to be completed.
- First time users may want to try the examples provided by repetitive pressing the Try This Example button.
- This tool lets users find out if a domain name is available for registration across generic top-level domains (gTLDs).
- Bogus Responses Some reachable sites are set to send bogus status response or no response at all while redirecting. This is done for different reasons, among others to deceive crawlers, for security reasons, or for other specific purposes. If you believe that a particular record is bogus, you may want to run its domain name through our MUST tool. This tool can help you to elucidate these cases. For instance, a search for seo.com with MUST shows that seo.com undergoes a 301 redirection while sending no final status code.
- For each registered domain name, the tool returns the corresponding status response code, IP, and reverse IP.
- Unless unreachable at query time, registered domains should return valid status codes and IPs.
- If a domain name is unreachable it does not necessarily mean that is available.
- The tool can be used to check if someone is infringing on the intellectual property of a business or company by including a brand name in a tld.
The tool can be used to discover subdomains that are not meant to be public. Just submit a query of the form
- (intranet, admin, cpanel, password, account, data,...).keyword
- (user, gmail, mail, email, mxrecord, mx, proxy,...).keyword
- (test, server, root, path, error, client, ad, adserver...).keyword
- For instance, try with intranet.yahoo, mx.yahoo, or mxrecord.yahoo
- A Word on CNAME Configurations
Ideally, a domain name server (DNS) should map a domain query to the intended canonical URL, whether the "www." alias is part or not of a query. Thus, querying a domain name by starting it with "www." can direct to nowhere if in said server the www alias does not point via the CNAME resource record to its canonical URL. The yes-www or no-www sites provides additional information on this.
- Webmasters, developers, and programmers.
- All the data generated by Minerazzi is provided for information purposes only. By using this site, you agree to use our data only for lawful purposes. Unless stated otherwise, the compilation, repackaging, and for/non-for profit dissemination or other use of our data is expressly prohibited without our prior written consent. We reserve the right to modify these terms at any time. By using this site, you agree to abide by these terms.
- IANA (2015). The Internet Assigned Numbers Authority (IANA).
- Google Blog (2015). Expanding the Internet domain space.
- CentralNic (2015). New gTLD, ccTLD + SLD Registry Back-end, Marketing, Distribution & Financing | CentralNic.
Contact us for any suggestion or question regarding this tool.