Scam of server provider’s voicemail notice.
Don’t click any link they sent, it’s a malware virus to steal your private information. Block the phone number and delete the message asap.
Here is what they sent:
New | voicemail: (1) . http://elprincipedepaz.com/s.php?ust7qzp6z

Same, have blocked them.. Been receiving messages from them all week.