Methods and system for determining message routing based on elements of a directory number

摘要

Methods and systems in a messaging system to identify a messaging platform for use in delivery of a message addressed to a mailbox address served by the messaging platform. The messaging system includes a network element and a plurality of directories. Using at least the NPA of the mailbox address, the network element determines which directory includes the indicator for the messaging platform for delivery of the message. Using at least the NPA-NXX of the mailbox address, the directory obtains and provides the indicator of the messaging platform for delivery of the message.