sfgeorge / dns-diff

Compare nameservers' DNS records for a domain

dns-diff

Compare nameservers' DNS records for a domain

Usage

./dns-diff.sh <list-of-nameservers.txt> <list-of-dig-queries.txt>

• <list-of-nameservers.txt> Should be a newline-separated list of nameservers, prefixed with "@". To test your operating system's default nameserver resolver, simply include a blank line in this file.
• <list-of-dig-queries.txt> Should include a newline-separated list of any queries that can be accepted by the dig command. Acceptable entries can include:
  • example.com
  • -t MX example.com
  • -t TXT example.com +noall +answer
  • api.example.com +short

For example usage, try:

./dns-diff.sh nameservers-example.txt queries-example.txt

Output

dns-diff will create a dns-diff-results directory within the current directory. This will contain a directory of query results for each name server listed. Use a recursive diff tool such as diff -r <directory 1> <directory N> to compare results.