I remember this one time, I was messing with stuff and my DNS lookups stopped working. So I looked around...
effective DNS servers for en0
❯ scutil --dns | grep -B 1 en0
nameserver[0] : 2600:1700:43b0:d640::1
if_index : 18 (en0)
--
nameserver[0] : 2600:1700:43b0:d640::1
if_index : 18 (en0)