✅ b.) 1999

That version was launched January 1999.

Ipswich City Council was online before that version. Its earlier Global Info Links service was already up and running by 12 December 1994 under the older website addresses:

ipswichcity.qld.gov.au / gil.ipswichcity.qld.gov.au

Here are some more versions of the council website through the years. You can view all these and more at web.archive.org.