FPBCN (naturally)

I started filling out the "Application for Unincorporated ID Number. "
It asked if I owned or leased property and what it was worth.
Okay. I'm biting the bullet. My junky computer equipment and tools might fetch 300 bucks on Ebay.
That's what I'm saying.


It then asks me for a "Federal Principal Business Code Number". Oooo-kay. Wuzzat?
In the document:
http://naicscode.com/faq/irsbacfaq.asp

The FPBCN is defined as the activity from which the company derives the largest percentage of its "total receipts".

You can figure out what best describes what you do at:
http://naicscode.com/default.asp

I punched in computer repair and got a few pages to choose from. A javascript link there sent me to THIS page:
http://naicscode.com/Search/MoreNAICSDetail.asp?N=811212#Description

The FPBCN:

811212

Computer and Office Machine Repair and Maintenance - 2002 NAICS Code

sounds like it fits the bill. 2002 appears to be the most recent set to choose from. I assume this is the number they're looking for.

It also offered the following "SIC Code":
7378 - Computer Maintenance and Repair

I'll make a mental note in case some other form asks me for it one day.