Area code 905 is in Canada (the Toronto suburbs, down to Niagara Falls), so it depends on whether your AT&T plan includes Canada for texting.
The (905) 803 prefix is in Cooksville, Ontario, Canada.
The Philipines, Russia and various other countries all have 905 as area codes in their country. In North America (USA, Canada, etc.), area code +1 905 is used in the suburbs of Toronto, Canada, extending south to Niagara Falls. Telephone country code +90 is Turkey.
Unless you have a calling plan that offers unlimited calls in the US and Canada, a call from area code 314 (in or near St. Louis, Missouri) to area code 905 (suburbs of Toronto, Canada), will be billed as an international toll call.
If you are placing a local call to a number in area code 905, you do not need to dial '1'. If you are placing a toll (long distance) call, you do need to dial '1'.
In North America (USA, Canada, etc.), telephone area code 905 serves southern Ontario, excluding the city of Toronto (area codes 416, 647, and 437). Area codes 289 and 365 are overlays on area code 905, serving the same communities.
Area code 905 (with overlay Area codes 289 and 365) is a telephone dialing area in southern Ontario, Canada. It includes the Niagara Peninsula, Hamilton, Oshawa, and the suburban Greater Toronto Area (but not Toronto itself).
Area code 905 serves part of southern Ontario, Canada, including Niagara Falls and the suburbs of Toronto. It is in the Eastern Time Zone, EST in winter and EDT in summer, the same as New York City.
North American (USA, Canada, etc.) telephone area code 905, along with overlay codes 289 and 365, serves southeastern Ontario, Canada, excluding the city of Toronto (area codes 416, 647, and 437). The 905-463 prefix is located in Brampton, Ontario.
Niagara-on-the-Lake is local only to itself and St. Catharines/Thorold. All other cities in 905 are long distance from Niagara-on-the-Lake.
00 1 plus the area code and subscriber number. Toronto has 3 area codes, 416, 647, and 437, plus 3 more area codes for the suburbs (905, 289, and 365). You need to know the correct area code for the specific number you are calling.
The area of Sel is 905 square kilometers.
The area of Nissedal is 905 square kilometers.