This is the main office for Global Internet Solutions (http://www.gisol.com), a crappy web hosting service provider. I had a billing dispute with them for four months which finally led me to this number. I had to call 10-15 times before anyone even picked up. I'm pretty sure it's just someone's house.
I am in the middle of a billing dispute with this company, they upgraded a hosting account telling me there was no difference in the price (from 7.95/mo paying a year at a time to a 49.95/mo accout billing for 3 years). I was on hold for over 30 minutes and was told another department handled cancellations and they had no incoming phone number. Better Business Bureau of LA is my next contact.