Because there is only one area code in the state, locals in smaller Alaskan towns routinely give only the last 4 digits of their telephone numbers since the first six digits serve as an area code and generally do not need to be known. For example, around Ketchikan, instead of 907-225-XXXX people will merely say XXXX since most of the numbers in that area use the 225 three-digit prefix (and the 907 area code). In Fairbanks, Anchorage, and other more populated areas with more than one prefix, people will still generally say only seven digits. Ten-digit dialing is nonexistent in Alaska aside from cell phones, with all local calls being seven-digit and all long-distance calls requiring 1+10D.

Area Code 867 is the area code for the three Canadian territories in the Arctic far north.+1-867 was created on October 21, 1997 from portions of two existing Canadian area codes. It has the largest land area of any area code in the North American Numbering Plan. The territorial extent reaches 3,173 km from Cape Dyer on Baffin Island to the Alaska border, and 4,391 km from the south end of James Bay to the North Pole. The largest distances between exchanges are 2,200 km from Sanikiluaq to Grise Fiord, and 3,365 km from Beaver Creek to Pangnirtung. Four different official time zones are observed within the area, though one community, by not observing Daylight Saving Time, effectively shifts between two of those zones.