1. A method comprising: determining, by a processor of a system, a list of a plurality of physical servers used by a service provider to translate telephone numbers of subscribers of the service provider to corresponding identifiers that can be used for Internet communications, wherein each of the plurality of physical servers is dedicated to a respective range of the telephone numbers of the subscribers of the service provider; determining, by the processor, an amount of memory of a physical server of the plurality of physical servers used for handling requests to translate the telephone numbers within the respective range for which the physical server is dedicated; searching, by the processor, a listing of a plurality of virtual machines available to the system for instantiation, each of the plurality of virtual machines having a respective memory capacity; determining, by the processor, based on the amount of memory of the physical server used for handling the requests to translate the telephone numbers within the respective range for which the physical server is dedicated, that the respective memory capacity of a virtual machine of the plurality of virtual machines is adequate to handle the requests to translate the telephone numbers within the respective range for which the physical server is dedicated; and responsive to determining that the respective memory capacity of the virtual machine of the plurality of virtual machines is sufficient to handle the requests to translate the telephone numbers within the respective range for which the physical server is dedicated, initiating, by the processor, instantiation of the virtual machine for handling the requests to translate the telephone numbers within the respective range for which the physical server is dedicated.