A little more details please.

I have read at least twice some time ago that they don't. So I always assumed you could apply for a bunch of credit cards in one day and none of the creditors would know about the other inquiries that day.

I also just Googled, and found this:

Inquiries Don't Show Up Instantly

Credit inquiries sometimes take a week or longer to show up on your credit reports. Theoretically, you could apply for 12 credit cards in one day and none of the creditors would know about the other inquiries that day. Of course, your FICO score would take a major hit when the 12 inquiries are factored into your score 30 days later. And you would have a very hard time getting approved for a loan or other credit with that many fresh inquiries on your reports.


Read more: Should I Apply for 2 Credit Cards on the Same Day? | eHow.com http://www.ehow.com/decision_7168558...#ixzz2ACNkV9aU