I've been trying to use the repeater at 147.225 MHz to access the repeater in Dwight, Ontario via IRLP. The IRLP node is 2460 and I did successfully work VA3XOR in Dorset a few months ago this way.
If I transmit and then key 2460, there is no voice response. IIRC, the time that I did this successfully, the connection to the distant IRLP node was confirmed with a voice message.
If I transmit and then key 2203 (another VE3MUS repeater in Muskoka) I get a voice response "The node number that you dialed does not exist. Please check the code and try again."
Clearly I am reaching the Aurora repeater because I do get the response to the 2203 code. Also I have QSO'd through the Aurora repeater locally.
Checking repeaterbook.com, it lists IRLP 2460 as "On Air" and "IDLE for 0 days, 6 hours, 7 minutes, 7 seconds." implying that somebody used it 6 hours ago.
Also repeaterbook.com lists IRLP 2203 as "On Air" and "IDLE for 0 days, 0 hours, 37 minutes, 9 seconds."