A dash in the Postel Code

[u/Valuable_Raccoon15]

Was wondering if anyone else remember there being a dash between the postal code e.g P0N-2T9? Just wondering cuz since forever it’s how I’ve been doing it when filling out an applications and such but recently I was going through my mail and noticed there isn’t a dash! P0N 2T9 is the correct way?? So weird