Received a blocked call on my Verizon Iphone?

Today I received a blocked call and was not able to answer at the time. I tried to call back to see who it was but no number is displayed and my phone will not dial it. I never blocked anyone from calling me. Is there a way to find out who called me?

Log into your account on Verizonwireless.com and you can see a list of numbers that called you and vice-versa. But they might not list blocked numbers, you'll have to check.

Sign up for trapcall.com

No… Hence why it was blocked