Here is a trick for you, hope you like it
${DID_NUMBER}
or you can test this, too:
${CALLERID(dnid)}
if itβs really only 3 DIDs then you can use the CID Modifiers manually as well.
The CID Modifiers is just right for you.
For DID1, DID2 and DID3 you just set the CID Modifier and then on Inbound Routes as wanted.