If the alphanumerics are 0 through 9 and A through F they represent a hexadecimal address, like a hardware or Media Access Control (MAC) address.
"MAC addresses are used in the medium access control protocol sublayer of the data link layer. As typically represented, MAC addresses are recognizable as six groups of two hexadecimal digits, separated by hyphens, colons, or without a separator."
"MAC-48 was used to address hardware interfaces within existing 802-based networking applications; EUI-48 is now used for 802-based networking and is also used to identify other devices and software, for example Bluetooth."
https://en.wikipedia.org/wiki/MAC_address