Was just looking into BGP, which is a tool for routing between networks, there are a bunch of tools that can be used to analyse it etc; http://www.bgp4.as/tools
One in particular has a rank of the various networks by theire "cone size" (number of their direct and indirect customers), of the Australian Telco's
By this measure we have very good network, not as good as Telstra, by clearly better than Optus and TPG/iiNet.
I guess Superloop have some work to do to make good use of indigo.
Im not sure why the separate entries for Vocus/Nextgen and TPG/iiNet, it could be a sign they arent properly integrated yet, in Vocus's case, government contracts are often done under Nextgen, not sure why, or why TPG/iiNet are still separate.