In Part I, DNS zone data access in the "new TLD" era, I introduced Centralized Zone Data Access Service (CZDS), a portal the ICANN community has deployed to help manage access to TLD zone files. I explained the steps you take to create an account, enable secure access, and select TLDs you want to access. Once you've completed this process, you must wait for approval by the registry operators for the TLDs you've selected, typically 2-3 days.
You can check the status of your zone access requests by logging into the CZDS at a later date and visiting the CZDS Dashboard. From the Dashboard, you can click on URLs embedded under a TLD string to review status (or you can choose from the Pending, Approved, Denied tabs).
Approval times may vary among registry operators.
Approved requests grant access to TLD zone data for a minimum of 90 days.
Once you've been approved to access a TLD's zone data, visit the Request Detail page for that TLD and click on the Download Zone File button.
Zone files will be downloaded to your browser's default download directory or folder. The file will be compressed in GNU Zip (.gz) compressed archive format.
For convenience and automation purposes, zone files follow a common naming convention:
Uncompress the archive file, open the text (.txt) file, and you'll be able to examine all the resource records that comprise the TLD zone.