I recently (within the last month) signed up for a new Telus number that has the area code (437). This is one of Toronto's new area codes that was introduced two years ago. When people call me, they MUST have a 1 or +1 (if stored in an address book) in front of the number in order for the call to go through. Just dialing 437-xxx-xxxx without a 1 or +1 does not allow the call to go through. All of the people I have asked to try calling me, are local. The addition of the 1 or +1 also applies to land lines.