On Fri, Sep 19, 2014 at 08:45:53AM -0500, kqt4at5v@gmail.com wrote:

I am running CentOS 6.5. I know this is not a CentOS specific problem. Netstat shows several open ports and no pid.

tcp 0 0 *:48720 *:* LISTEN

• tcp 0 0 *:43422 *:* LISTEN

udp 0 0 *:50216 *:* -

How can I identify what application is using these ports?

I'd try lsof.