I get these calls a few times a day and no one is on the other end.  I suspected the V100815361100470 was something trying to program my router but I guess I am mistaken.  it is just an annoying call.

The V number is the date followed by the time in  HH:MM:SS in military (24) time from the time zone the call was placed, followed by some other numbers I've never been able to figure out.
The same number would show on Caller ID if you didn't have a router. Your router is for wireless communication (WIFI) to your mobile devices. Or wired communication to your computer. It has nothing to do with your landline phone.

Time stop these low life bottom of the barrel scum suckers.  Also time that all phone companies devised a technique for all of these types of calls to bounce back right at the dirt bags that make them.

I have received numerous calls from various numbers with the caller ID showing "Life Alert" and "Med Advance". The numbers are: 240-397-5331 from Maryland (Aspen Hill, Bethesda, Frederick) under both Life Alert and Med Advance (call rec'd 16 minutes ago), 321-332-6561 from FL (Melbourne, Orlando, Palm Bay), and 307-316-7473 from WY (Casper, Cheyenne, Gillette).

I just got off the phone with the real Life Alert. They do have offices in any of the locations listed above. The rep assured me that they DO NOT cold call people and will only return calls from people interested in their products. I hope this helps!

I've been getting the same “Alert” calls from the numbers you listed. In addition, the pain cream scammers just started calling. These geriatric scams started a few days ago so they're probably all connected. I don't know how we got on the list. Were 29+, but a long way from collecting Social Secuity. Maybe the seniors aren't falling for the scam so they're targeting children and grandchildren to purchase for parents and grandparents.