I just received two calls one from (604) 630-0300 and just before that from (604) 638-5789 - no messages. ?Thought I would google and this is what comes up.  These numbers need to be stopped.

Received phone call 12:30 noon, Sept 1/08 aking if we had a mortgage.. we said it didn't expire for 2 more years and hung up..I called back within a minute to see which Mortgage Broker had called and found that the number was dis-connected/unavailable.... Called the RCMP who were as usless as tits on a bull.. totally un-interested... Called Shaw digital  operator who put us onto this google site, and found it  is a fraudulent number involved with scamming..

(604) 630-0300 Beware this number..Calling me so often but this caller has no luck...Don't entertain phone number which you don't know. Scammers are just around the bench!!!

I got a call at 11:30 at night from some incoherent Jack*** who said was responding my Craigslist ad advertising a cheap 10$ kids bike thinking we would ship it to San Franciso from Vancouver BC!. I called him insane and hung up.
It had this call display number (604) 630-0300

I had a call from this number at 7:58pm, Tuesday 30th September. When I called back the message said the number had been disconnected.

yes. it's a virtual number as skype users don't have to have an actual number. skype is used to called internationally from your computer for extremely cheap rates. it is not associated with a single user. and cannot be called back.