check_soa - Check a domain's nameservers
check_soa domain
check_soa queries each of a domain's nameservers for the Start of Authority (SOA) record and prints the serial number. Errors are printed for nameservers that couldn't be reached or didn't answer authoritatively.
The original Bourne Shell and C versions were printed in DNS and BIND by Paul Albitz & Cricket Liu.
This Perl version was written by Michael Fuhr <mike@fuhr.org>.
perl(1), axfr, check_zone, mresolv, mx, perldig, Net::DNS
To install Net::DNS, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Net::DNS
CPAN shell
perl -MCPAN -e shell install Net::DNS
For more information on module installation, please visit the detailed CPAN module installation guide.