Complex sentence: Area code 867, the area code for the three Canadian territories in the Arctic far north, was created on October 21,1997, from portions of two existing Canadian area codes (403 & 819).
Split into simpler sentences: Area code 867 is the area code for the three Canadian territories in the Arctic far north. It was created on October 21,1997, from portions of two existing Canadian area codes (403 & 819).