this is for whm/cpanel only
login to your WHM
click on "dns functions", click on "edit dns zone"
click on your domain name on the choices on the right and click on "edit"
make sure you have your own domain name entered like this on the domain:
yourdomain.com. (followed by a period, meaning it's a fully qualified, registered domain name) then on record type select "A" then on the right side of it type the ip address alloted to you, usually it's the first ip.
(the whole instructions above is good if you have a vps or a dedicated server account.
then back to Main click on "Restart Services" click on "dns Server" (bind)
clck on main again.
click on "Basic cPanel/WHM Setup"
make sure you complete the dns usually the first and second nameservers are very important.
now go to your domain control panel or domain management panel, if it is godaddy.com
login
click on "domains" and then "my domain names" click on your domain name among the list, click on "domain host summary" wait 24 to 48 hours before complete dns propagation. HTH