Next DNS Multiple Router IPs

I'd like to apply a different NextDNS configuration ID on my router based on the source VLAN / IP relay (i.e. I have an IP relay on 192.168.1.1, 192.168.2.1, 192.168.3.1, etc.), and I'd like to apply (cabc123, cabc234, & cabc345 to each).  This seems like an easier thing than multiple client based rules, and would give me a lot of value