I know of 3 New Zealand based instances.
You can get an idea of what is on them by following the "See whats happening" link from the landingpages listed below.
https://mastodon.nz/about "An NZ hosted Mastodon server. For all Kiwis and aspiring New Zealanders!"
https://mastodon.nzoss.nz/about Run by NZOSS on server provided by Catalyst.
https://cloudisland.nz/about "Cloud Island paid-membership-only server, to enable paid moderation and professional management of the platform"
EU Joins Mastodon Social Network, Sets Up Its Own Server https://tech.slashdot.org/story/22/04/28/2128204 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 (office) +64 (7) 577-5304 (home office) https://www.cs.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/