Ah yes I completely forgot to stop duplicates. I'll just add that now.
Checking if a domain name is registered can be a trick task. The only reliable method is to run a whois; but most hosts only search a fraction of the whois records (perhaps just .com) and also limit your queries. You need to pay money to make mass requests.
I have opted to check for any kind of DNS record. That means registered but unused domains will still return available, but the trade off is that it's very quick, pretty accurate most of the time and most importantly free. :)
Comments
Great tool. Returned some false positives for me. Also, searching for a specific domain in all lower case will "find" that domain 50 times.
Ah yes I completely forgot to stop duplicates. I'll just add that now.
Checking if a domain name is registered can be a trick task. The only reliable method is to run a whois; but most hosts only search a fraction of the whois records (perhaps just .com) and also limit your queries. You need to pay money to make mass requests.
I have opted to check for any kind of DNS record. That means registered but unused domains will still return available, but the trade off is that it's very quick, pretty accurate most of the time and most importantly free. :)