I got a call from this number, and when I answered no one was there.  I answered, HELLO three times, and nothing.  About a minute later though, I got a message on SKYPE that my daughter had tried to call from Germany and I had answered and said HELLO three times but couldn't hear her.

I called her back on SKYPE and sure enough it was her that had called.  I assume that the number (604) 855-7584 is a number that routes SKYPE calls.  

This could be why you get the long busy signal when you try to call it back, and that no one can trace the number to anyone.  

This means that you are either getting a legitimate call from someone you know from SKYPE and it just doesn't connect through to you.

It is also true then that if the call connects and someone speaks to you and tries to scam you, that they are using SKYPE to make these types of calls.

Hope this explanation helps someone figure out who may be calling.

The number is a default number for blocked numbers.  When my husband calls from work from out on the work site, this is the number that shows.  You can not call it back-you get a long beep.

My commodities broker calls me from Chicago and this number comes up. On another thread this number is identified as a major carrier trunk line. That is it is a major feed line for calls coming into Canada. It is probably used mainly by companies marketing some product or service but it also appears with cellular calls across the border. Roaming on cell, etc.

Or it could be boogie men, that sounds reasonable too!!!

It is some kind of phone exchange, i just got it today and a message from a collection agency that they had changed their name...it was legit for me.

(604) 855-7584  was screening my calls and this number appeared.  checked on here and see it's not anyone i know!  is it a scammer???

I have been receiving calls from this  # several times over a period of days @ differing time  ..comes up private #  tried calling  back  and receive a strange tone sound.