SSC addresses only range from 1 to 4096. Which pixelnet universe you have selected on the hub determines which block those addresses will respond to.
For pixelnet
Universe 1 - 1 to 4096
Universe 2 - add 4096
Universe 3 - add 8192
Universe 4 - add 12,288
.
.
.
Universe 254 - add 1,036,288 no firmware for that... Yet...
Currently i believe there is firmware available for the etherdongles for pixelnet universes 1-4, 5-8, and 9-12.
RM