Yep, it's Lifelock. I also had an account with them but I never answer.

Does anybody else getting calls from this number?

I have no idea who this is. They call from time to time but never leave a message. I don't pick up numbers that I can't identify so I never talk to them. They always call my cell phone.

Another site said Lifelock.  I also have this phone number show up numerous times.  I also had a lifelock account that I never kept up so it sounds about right to me.