I know this is probably hard to find, but with all the companies out there trying to get your business for nbn connection, my question is as follows
is there anywhere you can find who any of these so called providers actually have their own backhaul or who they rely on.

With so much going on many providers to the smaller towns or even WA don't have their own and rely on other companies.
This might be ok for the most part when you sign up and they say all the good things but they fail to come up to scratch.

For example optus is shit but many use them, and it becomes a congested nightmare, TPG is used by some as well and it seems to be a congested mess