tools for checking DNS setup

[Charlie Romero]

I just worked through a problem w/ my DNS due to a faulty setup 
script. I'm basically a DNS newbie so I'm trying to check my work. 
Can anyone point me to some tools/websites that can check my domain 
setups for errors, etc. BIND 8 running on RedHat.

If anyone can take a look my primary: ns4.jumpinc.com = 209.249.111.199

My company's main domain: www.jumpinternet.com.

Thanks for the help

Charlie