If you are an admin or owner of your account then you have the ability to export all redirects along with all source hostnames in your account into a CSV format.
Your exports can be located through your settings under the import/export tab. Then, click on the button for the CSV you would like to download.
Check out these articles to understand your account redirect CSV export and to understand your account source hostname CSV export.
If you have any questions on how to export your account CSVs please let us know. We would be more than happy to help.