I have done some research into this matter over the last little while and found this site that tells everyone about these numbers and whom they are owned by.  http://www.reversecanadalookup.com/604-998-4xxxAll numbers with those digits are owned by the same company,....MTS Allstream.They are based out of Manitoba and their contact number is as follows:Allstream, Business Customer Care1-+1 888-288-2273Feel free to call them.  I have put myself on the Do Not Call registry at https://www.lnnte-dncl.gc.ca/index-eng and suggest everyone do the same.  It appears they might make phone calls for multiple companies.

http://800notes.com/Phone.aspx/1-(604) 998-4661/">(604) 998-4661  etc. shows that it is from various "telemarketers" etc. or nuisance calls.604 is my area code but people have reported calls outside of 604- [Location: British Columbia (Burnaby, Coquitlam, Richmond) Canadahttp://www.mycallbot.com/numbers/(604) 998-4661   Local mover ?Other caller ID link reports require payment.I just block the call with Phone Company option or my home phone feature option as reports are they call repeatedly