Whois Server lookup problem

[webdev]

Hey guys, I am running a hosting company for about a month now and I am right now in the progress of allowing my customers to register domains with me. Everything's fine and I found a reseller but I am having issues checking wether the domain is taken or not. I am using a script that is...

[broadmind]

Use Whoisxy.com to check whether the domain name ( what you had previously ) is already taken or not .