Canadian Area Codes / Ontario
The 905 area code
The 905 area code covers Greater Toronto Area and the Golden Horseshoe, Canada.
Province
Ontario
Time zone
Eastern Time
Country
Canada (+1)
Cities in the 905 area code
Major communities served by 905 include:
Overlay codes for this area
The 905 region shares its territory with these codes — which is why you dial all 10 digits for local calls:
Dialing a 905 number
Within Canada and the United States, dial all ten digits — 905 plus the seven-digit number. Ten-digit dialing is required here because 905 shares its territory with 289, 365, 742. From outside North America, dial +1 905 and then the number.
Is a 905 call spam?
The 905 area code is a legitimate code for Greater Toronto Area and the Golden Horseshoe — it isn't a scam on its own. But because scammers can spoof caller ID to display any area code, an unexpected 905 call isn't guaranteed to be local or genuine. When in doubt, let it go to voicemail and call back using a number you trust.
Want a local 905 number for your business?
Voiswitch provides local 905 numbers on business phone systems — or ports the one you already have. Free quote, no obligation.
905 area code — questions
Where is the 905 area code?
The 905 area code is in Ontario, Canada. It covers Greater Toronto Area and the Golden Horseshoe, including Mississauga, Brampton, Hamilton, Markham, Vaughan, Oshawa.
What time zone is the 905 area code in?
905 numbers are in the Eastern Time zone.
Is the 905 area code a scam?
No — 905 is a legitimate geographic area code assigned to Greater Toronto Area and the Golden Horseshoe in Ontario. The code itself isn't a scam. That said, scammers can spoof any area code (including 905) to make a call look local, so an unexpected 905 call isn't guaranteed to be genuine or nearby. Treat unsolicited calls with the usual caution no matter what area code shows.
How do you dial a 905 number?
Within Canada and the US, dial all ten digits — 905 followed by the seven-digit number (ten-digit dialing is required because 905 overlaps with 289, 365, 742). From outside North America, dial +1 905 and then the number.
Is 905 an overlay area code?
The 905 area shares the same territory as 289, 365, 742. Because multiple codes overlap, you dial all 10 digits for local calls.
Can I get a 905 number for my business?
Yes — Voiswitch can provide local 905 numbers, and if you already have one, we can port it to your new phone system. Get a free quote to add a local 905 number.