You should post in the App Gallery forum, they would probably be able to provide that information.
If your printer is on a relatively current firmware, you could just use the service with the Network Troubleshooting enabled and just take a gander via Wireshark to see where it goes
Please be sure to select "Accept Solution
" and or select the thumbs up icon to enter Kudos
for posts that resolve your issues. Your feedback counts!Joe Arseneau