(678) 721-1456

Seems legit.  Called to verify port number to AT&T from Tmobile

Yes, this number is from AT&T's porting department

Got a call from these guys, except I have never been an AT&T customer. Also received a call from 866-317-1246, same message differe phone company. Scam... your phone company won't ask for your passcode.

They kept cancelling my sync, those ******s! I finally picked up.

Same here (but I missed the call). Just ported a number from t-mobile to at&t. new phone works fine, so i'm guessing all is well

I got this call today.  They asked if I was able to make and receive calls on my ported number.  I told them yes, then they asked me for my name, and then my last name.  I halted at first name.  If they were AT&T they should know who I am, especially after giving them my first name.

same idea, just ported my phone  from at&t .must be a follow up call

got a call from this number when I port my number from sprint to at&t. I think this is a courtesy call from at&t

Just got a call from 678-721-1456 too.  I recently ported my number from T-Mobile to AT&T.