[Serusers] Routing multiple numbers to 1 account

Hello all, At this moment i'm using the full e164 numbers as account's in ser, that is for every number someone wants delivered to them they would have to register it using the account details. This however poses a problem with a 100 bock of numbers for example while a device can only register a few of them so what i would like to do is mimic the asterisk like dial(SIP/number@sipppeer) in SER. That way the devices only has to register once and recieves the number dialed in the incomming INVITE. If i use aliases to alias numbers to 1 account the account allways recieves it's own registered contact instead of the number dialed, is there any way to support number blocks in this way? For example: Device registeres as device_1@sipserver with contact device_1@device_ip:port SER gets invite for number in the block of device_1 and sends the invite as dialed_number@device_ip:port instead of device_1@device_ip:port Kind reagards, Erik Versaevel