I've been getting dozens of calls from "asterisk" that then appear in history as "unknown". I have unknown calls blocked already. I'm unable to block calls from "asterisk" and they don't seem to actually have a phone number associated with them. These calls aren't being flagged as spam and I have no way to report them as spam unlike other calls.
On a few occasions, I've answered and no one says anything on their end. Twice these calls have gone to voicemail and they've lest messages with background noise and one a male started singing in the end... not in a creepy way but like he was singing the tune to something and hung up after like 5 notes. lol
So I'm not sure if the is something bugging out or if someone is intentionally harassing me. Either way, I want these calls to stop.

This fellow seems to have the same problem: https://community.verizon.com/t5/Other-Services-perks/quot-asterisk-quot-is-the-new-telemarketing-number-that-can-t-be/td-p/1686720