Method and system for routing communications traffic between a machine to machine, M2M, device connected to a telecommunications network and having an International Mobile Subscriber Identity, IMSI, and a server, the method comprising assigning an access point name, APN, from a plurality of APNs based on the IMSI of the M2M device. Routing, via the assigned APN, communications traffic between the M2M device and the server, wherein the server is determined based on one or more of: the IMSI, the APN and a characteristic of a communication traffic between the M2M device and the server.