github.com/StackExchange/dnscontrol/v4@v4.11.0/pkg/js/parse_tests/029-dextendsub/example.tld.zone (about)

     1  $TTL 300
     2  a.sub            IN CNAME b.sub.example.tld.
     3  b.sub            IN CNAME sub.example.tld.
     4  c.sub            IN CNAME sub.example.tld.
     5  e.sub            IN CNAME otherdomain.tld.