Got a call from this number with instructions to call 844-746-0437.

Notes on that number's 800notes page indicates that this is a debt collector for Vonage. I did have a bill from Vonage, but that was paid off over 3 years ago!

I called to find out why they were calling me, and they were actually looking for someone I know. I told them I didn't know their current number, but offered their email address which the lady declined. I confirmed that the address they have is current, and the lady said they would remove my number as a contact for the other person.

Adding them to my blocklist anyway, just to be sure.