According to various embodiments of the present invention, systems and methods for routing telephone calls from host switch to remote switch in a Voice Over Internet Protocol (“VoIP”) network. In one embodiment, a system includes a host switch in a voice over internet protocol (“VoIP”) network communicably coupled with a plurality of remote switches and a public switched telephone network (“PSTN”), the host switch to receive a call from the PSTN having signaling including a location routing number (“LRN”) field, and a database communicably coupled to the host switch to identify a target remote switch of the plurality of remote switches that is associated with at least a portion of the LRN field. In addition, the host switch is to send the call to the target remote switch based on the identification by the database. Other embodiments are also disclosed.