show ap bss-table | include <things to match>
e.g. show ap bss-table | include e4:f3
or, from airwave (e.g. log into airwave then use this URL)
https://<your airwave ip>/api/ap_bssid_list.xml
see help for params/options to above API call
https://<your airwave ip>/api#AP_BSSID_List_API
if you want to manipulate the data so you just get the last 4 bytes, you can either post process the CLI output, or, use some sort of script to parse the XML output of the Airwave API