How to recognize if its IO or CSrep - POJ method -

[always_in_labor]

I tried the POJ method 12261LINblahblah134
It said
transferring to nebraska service center
connecting to the next available agent

Is this the IO or the CSRep that is responding?

How to recognize if its an IO that is speaking on the other side ?

 

[Dumbledore]

You can ask him, perhaps ?