NSLOOKUP for local IPv6 devices fails

I'm trying to determine if I have a problem with a router or have run into a Windows peculiarity. If I do an NSLOOKUP for IPv4 addresses of devices on my LAN I get the addresses returned If I query the IPv6 addresses (NSLOOKUP -query=AAAA ...) I get "*** No IPv6 address (AAAA) records available for xxxxx". I can display a table of local IPv6 addresses in the router so I know the addresses exist.

If I specify a DNS name for some resource off in the internet I get the address so I suspect Windows is fine, but I'd really like to know if others have this problem.

BTW, my router is an ASUS RT-A87U.

I've discovered (or at least think I've discovered) that IPv6 hosts do not automatically register themselves to the local DNS so I probably asked the wrong question.

Is there a command - similar to NSLOOKUP - that returns an IPv6 address (or set of IPv6 addresses) when given the host name of a resource on the LAN? I gather that Windows applications can use several techniques such as LLMNR to resolve names on the LAN but I can't find any command that does that and displays the result.