510-405-1607

Need to know who it was. I was expecting a call, and somehow missed this call. Was wondering if anyone know who it was before I call this number back.

Activation call for Google's Grand Central service. It calls you, you enter your 2-digit confirmation code, and your Grand Central account is activated.

They called at about 10 at night. . . . I have no idea who they are and don't know if I should call them back. 510 is a Californian area code, and I don't know anyone from California. I think. . . .

They called at 9:53PM PST.  I use GrandCentral, but was not expecting a call from this number.  When I called it back, it went to voice mail, with the voicemail greeting claiming to be GrandCentral.  Maybe I'm overly cynical, but I doubt I would get random calls in the middle of the night from them.

This is the number that called me to activate my Grand Central account. Which is also posted by kp.

Ditto, got a call at 11:00PM from this number, I use grand central, there was only silence on the line. I called back, and it went to grand central voice mail.

Long Story - Longer:  510-405-1607 is one of many GrandCentral dispatch numbers that Google (new owner of this service) has setup to contact account-holders for new account validation, PLUS when users setup their accounts for call forwarding notifications; however, this system is still in beta (testing) mode, so you may get odd calls when you least expect it.  

GrandCentral allows you to establish & use one phone number to intercept calls from all your other phone sources.  More than likely, someone in your home/or at your number has signed up for the service and didn't tell you (like an employee, a student, a new-business owner, a busy professional w/too many phones/PDAs/pagers/etc, a cheating spouse, a debt-collections dodger, or a telemarketer's worse nightmere - an informed consumer).  Who knows!?!  

I setup my GC acct because I was receiving unsolicited calls to my fax line at 3AM and too many blocked name telemarketing calls to mention even though I am registered on the so-called DO NOT CALL registry.  I now use GrandCentral to screen every call where the name does not appear on Caller ID (or in my GrandCentral address book) AND ALL blocked callerID calls.  Those callers now get a very special/official-sounding disconnection message when they call and I no longer hear the phone ring.  GrandCentral keeps me sane (especially at 3 in the morning)!

The only other reason i can think of for getting calls from this number, is if a GC account-holder keyed/typed the wrong callback phone number in their  telephone settings menu.  That should be corrected quickly once they realize their missing their calls.  Don't worry it safe for now.

get Missed call from this number(Fermont CA) at 9:53PM (GMT+2)
just got 3 rings then hanged-up before i pick the handset
btw: I'm not GrandCentral member i've been called into My Freeworlddialup+ipakll(DID)

2 rings ..hangup.