I think it is a routing number in Metro Vancouver, BC for overseas calls. I just received a genuine call from my friend's land line in El Salvador, Central America to my cell phone in Vancouver and it showed (604) 628-2598.

I am in Canada. My boyfriend is in the US. When he calls me through most calling cards, it comes up as this number. (Especially when he uses Clear choice or Centsible.)

Got a call from this number but no1 answered when I said "hello"
Called back and I got a busy signal.

I got a call from this number today at 3:35pm. Missed the call and tried to call back later but no ring tone.

I had a missed call from this number recently and the caller stayed on the phone leaving a message without talking. You could hear people speaking in Chinese in the background. For some reason, I thought this call was a little odd. So, if they call again I will ignore there calls.
October 22,2009

I work for a large hotel chain and we have received numerous calls from this number claiming to be our Tech Support. They then instruct us to go to a website which includes our company name in the web address, the screen then goes black and a porn video pops up. The person on the phone is always extremely rude and we have now been advised to ask for a case number when they call.