/etc/ax25/axports is in libax25 0.0.12-rc2+cvs20120204-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | # /etc/ax25/axports
#
# The format of this file is:
#
# name callsign speed paclen window description
#
#1 OH2BNS-1 1200 255 2 144.675 MHz (1200 bps)
#2 OH2BNS-9 38400 255 7 TNOS/Linux (38400 bps)
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