I received two calls from this number and another from 415-229-7569 within an hour on 2/20/2009. They began shortly after 8 a.m. local time and ended just before 9 a.m. I didn't recognize either of the numbers but they are registered to "Tippit." Google results show Tippit to be a "media" company. I assume that means it is a telemarketing outfit of some kind.