Numbers with this prefix were first introduced in 1994.While 3125756999 was originally issued with the info above, the owner of the phone number (312) 575-6999 may have transferred it through a process called porting.
Caller name: Social Security
Caller type: Unknown
I called 312 575 5354 and 312 5756999 called me back. I told them what was going on they Told me that would look into my social security. And call me back. That's 4 days ago and nothing.