I got a call from this #, thought I recognized it, and put in in my search engine. Turns out this is a Verizon #. The call is legit. I always get a call from this # when my account is past due, which is ALMOST every month :(
Don't give any information over the phone if you feel uncomfortable about it. You can always call Verizon and give them the correct info, if it's necessary, or correct it online. Even though I know the call is legit, I'd still feel better calling customer service myself and updating my info.
Caller claimed to call on behalf of Verizon Wireless regarding returned mail. Caller requested an address verification and was denied any information other than name due to obvious security concern. Caller suggested verifying address on Verizon website.
I had a missed call from this number, and when I tried to call back, I reached a recording that said "Due to emergency conditions, your call cannot be answered at this time." My fiance asnwered a call from this number and was told they were calling from Verizon and needed to verify our address. He called Verizon afterward and verified that the call was legit.