!dnstrace-ip traces an IPv4 address through the DNS hierarchy, starting from the root nameservers and following each delegation step until reaching the authoritative nameservers for the corresponding pointer (PTR) record.
Reverse DNS resolution is performed by walking the DNS delegation chain for the in-addr.arpa domain. This command provides full visibility into each stage of the lookup.
You may also use !dnstrace or !dnstr to perform the same operation.