dnswalk

DNS debugger. “Walk” across zones and validate database consistency and best practices. More information: https://manned.org/dnswalk.

• Debug a DNS pathway for a Fully Qualified Domain Name (FQDN):

dnswalk {{domain}}.

• Process sub-domains [r]ecursively:

dnswalk -r {{domain}}.

• Only perform a dnswalk if the zone has been [m]odified since the last run:

dnswalk -m {{domain}}.

• Print [d]ebugging and status information to stderr instead of stdout:

dnswalk -d {{domain}}.

• Suppress the check for [i]nvalid characters in the domain name:

dnswalk -i {{domain}}.

• Enable duplicate A record warnings:

dnswalk -a {{domain}}.

• Enable “[F]ascist checking” to compare the A record PTR name with the forward name and report mismatches:

dnswalk -F {{domain}}.

• Enable “[l]ame delegation” to test whether the listed host is returning authoritative answers:

dnswalk -l {{domain}}.