Who called from 3123851158

So this number shows up when someone is trying to block who is calling, is this always for people using *67, like friends using this or just telemarketers?? can you explain that better.  I got a late call last night and this number showed up and scared me to death.

Ok.... i had it with this # it;s been calling everyday at the same time and it only rings once then and they hung up, so it doesn't appear at ur caller ID. So WTF I'm seek of it.............312-385-1158

This is Privacy Manager, (a feature from ATT) that has intercepted a call coming from someone that has blocked their number.

Using Privacy Manager

1. An unidentified caller dials your home.
2. Privacy Manager intercepts the caller before your phone rings.
3. If the caller chooses to identify himself, Privacy Manager rings your line.
4. When you answer, you hear the caller's name and you can choose to:
* Press 1 to accept the call.
* Press 2 to decline the call.
* Press 3 to refuse a sales call.
5. If you pressed 1, the call goes through. If you pressed 2 or 3, the caller will hear a brief message from Privacy Manager and then the call is disconnected.

these people keep calling me and saying they are from american express.  they asked for my social security number and mother's maiden name.

I recieve about 20 calls per week from this number and when you call it back it is not in service for in-coming calls....it is VERY frustrating