Using standard cox.net DNS servers
Default Gateway : 68.230.52.1
Primary DNS Server : 204.194.232.200
Secondary DNS Server : 204.194.234.200
By the way, looks like another user with d-link router has the same issue:
http://support.mozilla.com/tiki-view_forum_thread.php?comments_parentId=395657&forumId=1
http://forums.techguy.org/networking/766363-d-link-dir-655-firmware.html