If you are using a flavor of the Windows Operating system, open a Command Prompt window and issue the command ipconfigthen hit the Enter key. Look for the network adapter that is active and the information that you seek will be listed there.
I am not a Comcast Employee. I am a Customer Expert volunteering my time to help other customers here in the Forums. We ask that you post publicly so people with similar questions may benefit from the conversation. Was your question answered? Mark the post as Best Answer!