Your are using AWS Route53 to host your DNS and you need to backup all hosted zones along with complete records which should also compatible to BIND. Don’t scratch your head below script will take care of it, all you need is to install a handy tool for managing Route53 called “cli53“.
apt-get install python-pip
pip install cli53
Once cli53 is installed download the the script from here and before executing it you only need to specify your access keys. The script will fetch the name of all domains currently created in your account and backup them in Bind format to individual files.