[vacri]

The reasons why they're seeking the numbers are law enforcement reasons. Dumping rubbish and having unregistered pets violate by-laws.

Wiretaps (ie: obtaining content) do require a warrant, and in the state of Victoria, where this is, half of all such applications for warrants are rejected by the magistrate. Getting the name and address of the owner of a phone number is a humdrum law enforcement issue, and really councils should have that power. Getting the list of calls made or where emails have been sent is a more serious violation of privacy (instead of "who owns this?" it's "what do they do with it?"), and I imagine that there's simply a legal loophole there.

The article has an amazing lack of detail and follow-through.