The MAC address is in the format MAC AA:BB:CC:DD:EE:FF where each of the letters can be a number between 0-9 and letters between A-F. All network devices are allocated a unique MAC address usually initially sequenced by the manufacturer, that is netgear will have a common initial sequence and so on.
The local network you computer has allocated itself or the router can be recovered from the PC from the CMD prompt and use the IPCONFIG (ALL) command