The first three characters of a Canadian postal code are the "Forward Sortation Area", and the last three are the "Local Delivery Unit".
Also they never include the letters D,F, I, O, Q or U, and never start with W or Z.
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@Shayman and the dash in a phone number separates the exchange code from the station code (and separates the area code from the exchange code in ten-digit numbers). This means that any town large enough to have its own telephone exchange gets assigned a block of ten thousand numbers (10⁴ station codes) even if it serves far fewer phones than that.
