They called twice and both times when picked up just heard nothing. No voice. No recording. Nothing as if someone were just listening and then hung up.  Looked up the number said it was from Austin, TX... I live closer to Houston area. The number seems to belong to a car insurance company which we had never contacted because we already have car insurance. There was no reason for the 737-200-7289 number to be calling us on my cell no less.

They called twice in a row.  Second call I answered and there is nothing.  Silence, but you can hear slight background noise.  I don't say "Hello, hello, hello"  I say Hello once and if you don't answer, I hang up.  I hate calls like this!

It was a call for diabetics in my household..

They called my home phone number so my call blocker caught this call. My caller id says UNASSIGNED. I looked up this number & the area code 737 is a legit area code that is in the Austin, Texas area.  The 200 "is not" a legit prefix number for that area code.  The 200 prefix is an unassigned number for the Austin, Texas area.  It may be used in other places but not in this area code 737.  I have been told by local police that this is how criminals, crooks, scammers etc., set up numbers for spoofing or that it is actually being called from over seas to this number that doesn't exist.