A system and method for application location register routing at a signal
transfer point (26) are provided. The signal transfer point (26) includes
processor clusters (64, 66, 68) and databases (236, 238) for processing
queries including global title translation, local number portability, and
application location register routing. A query message is received by the
signal transfer point (26), a first database residing in the signal
transfer point (26) is accessed to determine the location of a second
database (238) also residing in the signal transfer point for processing
the query message. The second database (238) is then accessed to obtain
the network address of a home location register or short message service
center, which is then used to deliver the query message to the network
node specified by the network address.