🇨🇦 Canada · Ontario

Area code 437

Area code 437 is a telephone area code in Ontario, Canada, covering Toronto. Local time is UTC−5 (UTC−4 in summer). Numbers look like (437) 234-5678, or +1 437 234 5678 from abroad.

Province: Ontario
Time zone: Toronto UTC−5 (UTC−4 in summer)
Local time now: –
Dial from abroad: +1 437

Places in area code 437

Cities and towns with telephone exchanges in the 437 area code, most exchanges first.

Toronto

How to dial area code 437

Calling from	You dial
Inside the 437 area	437 234 5678 (10 digits)
Elsewhere in the US & Canada	1 437 234 5678
Any mobile phone, anywhere	+1 437 234 5678
UK, Europe, India and most countries	00 1 437 234 5678
Australia	0011 1 437 234 5678

Other area codes in Ontario

226 London 249 Ontario 289 Hamilton, Oshawa 343 Ontario 365 Ontario 382 Ontario 416 Toronto, North York 519 London, Kitchener 548 Ontario 613 Ottawa, Kingston 647 Ontario 683 Ontario 705 Greater Sudbury, Sault Ste. Marie 742 Ontario 753 Ontario 807 Thunder Bay, Kenora 905 Mississauga, Oakville 942 Toronto

Area code 437: FAQ

Where is area code 437?

Area code 437 is in Ontario, Canada and serves Toronto.

What time zone is area code 437 in?

Area code 437 is in the America/Toronto time zone (UTC−5 (UTC−4 in summer)).

How do I call a 437 number from outside the US and Canada?

Dial your exit code (00 in most countries, or + on a mobile), then 1, then 437 and the seven-digit number. Example: +1 437 234 5678.

Is a call from area code 437 a scam?

Area code 437 is a regular North American area code, but caller ID can be spoofed: scammers often show local-looking numbers. Do not call back unknown numbers that ask for money or personal data, and check the number with the phone number validator to see whether it is valid and whether it is a mobile, landline or VoIP number.

Phone number API

Check 437 numbers in your app

numlookupapi checks any phone number worldwide in one request and returns validity, line type, carrier, location and every standard format as JSON.

Read the documentation

100 free requests every month. No credit card required.

GET https://api.numlookupapi.com/v1/validate/+14372345678

{
  "valid": true,
  "number": "12069220880",
  "local_format": "2069220880",
  "international_format": "+12069220880",
  "country_prefix": "+1",
  "country_code": "US",
  "country_name": "United States of America",
  "location": "Seattle",
  "line_type": "landline",
  "e164_format": "+12069220880",
  "national_format": "(206) 922-0880"
}