Can see the difference between the information exported from the DNS records configured by Route53 and the locally managed Zone files.
Download the binary from GitHub Releases and drop it in your $PATH.
Export Route53 as a BIND zone file:
$ cli53 export example.com > r53.txt
SeeAlso: cli53
Excluding comments and blank lines in local zone files:
$ grep -v '^;' example.com.zonefile.txt | grep -v '^$' > local.txt
zfdiff r53.txt local.txt