If you are looking at a download for a file containing this name, here is a review of what you should know: File Content Overview
Before opening, scan the file with updated antivirus software. If the source is unknown, it is best to avoid downloading or extracting it. Troubleshooting
If you see the name in a chat but cannot play it, the file may have been moved or deleted from your internal storage .
If you are trying to find this specific file on your own device:
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
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 .