APs -and other devices such as routers, switches and bridges- usually contain several MACs. There is a connection between the MACs in that they are usually sequential. Usually the way the MACs run is like this:
One MAC for the wireless connection.
One MAC for the WAN port (if the device is a router.)
One (or more) MAC used internally
One MAC for each switch port (if the device has a switch.)
In your case the device probably has at least 16 MACs, based on hexadecimal numbering. You may not see some of these as they are internal, and others would only be seen if you looking at packets being switched on the wired sided of the network.
The MACs are probably in this order:
By the way, you might want to look at the way MACs are issued by the OUI. It will further explain how those numbers are related.