Based on the naming convention, appears to be an automated filename generated by WhatsApp for an audio file. The name indicates it was received or saved on June 12, 2021 .
Are you trying to a lost voice note from this date, or did you find this link on a public website ? About suspicious files | WhatsApp Help Center Download AUD 20210612 WA0131 zip
If you see the name in a chat but cannot play it, the file may have been moved or deleted from your internal storage . Based on the naming convention, appears to be
While the original file was likely an audio format (like .opus or .m4a ), it has been packaged into a .zip file, possibly for bulk sharing or storage. Security and Safety Review Based on the naming convention