zoneedit

is zoneedit use for people who want to mange their own dns so it doesnt need to be done by their webhost provider?

Not for that purpose. If you host your web by a particular provider it's very likely that they need to host your DNS as well.

it's a dedicated host. I didnt want to use up my ip for a nameserver.

Not sure what you mean "use up".

Well here is part of the email I got from tech support from my dedicated host
"If you want to handle your own DNS, you will need to allocate two ip addresses, create an ns1.yourdomain.com and ns2.yourdomain.com (yourdomain.com is just a variable, replace yourdomain with your real domain), and then register those entries with your registrar. You will then need to change the DNS servers for your domain to the two entries you created."

my dedicated host has up to 10 ip and I was planning to use all 10 for 10 different domain name.

Running your own DNS content server doesn't use up that single IP, you can still use that IP for other purpose. If you say it use up port 53, then that would be true.
My NS2 box (a p133 with 64mb RAM on NetBSD) for instance, runs dnscache, ftpd, socks5 server, sshd, tinydns, ntpd and apache.