Really Simple DNS Question

[andysm849]

Ive been having trouble getting the DNS on my sites to function properly. I have 9 different sites, and Ive been having difficultly accessing them in different ways. For the most part all my sites can be accessed by typing in http://www.example.com.

My first problem is that one of my sites gives the shared IP error when I do this, but I can access it by typing in http://www.example.com/index.php.

My second problem is that none of my sites can be accessed by just typing in http://example.com. Some go to the parking page from name.com, and others give the shared IP error but none work. For the A record I have www.example.com = the server's IP and then another A record with example.com = the server's IP (the hostname is left blank)

I am using name.com to host my domains and know that I need to add some DNS record but Im not sure what.

All of my sites work by typing www.example.com when I set the A record on name.com's website for the site to hostname www, record answer: my public IP address.