Area code 354 — Quebec
Greater Montreal suburbs (second overlay). Overlay assignment, in service since 2023.
At a glance
- Country
- Canada
- Province / territory
- Quebec
- Service area
- Greater Montreal suburbs (second overlay)
- Time zone
- Eastern Time (EST/EDT, UTC-5/-4) · current offset -04:00
- Type
- Overlay
- In service since
- 2023
- Country code
- +1 (NANP)
Map
Cities served by 354
Related & overlay area codes
Area code 354 shares geography with 2 other codes serving the same region. A call placed inside this overlay must dial all 10 digits regardless of which code your own line uses.
Carriers operating in 354
The following national and regional telecommunications carriers hold central office (CO) code assignments within numbering plan area 354. Number portability means a phone number originally issued by one carrier may now ride on another carrier's network.
About area code 354
Area code 354 is a Canadian numbering plan area covering Greater Montreal suburbs (second overlay). It was placed into service in 2023 as a overlay code, and today operates under the Eastern Time (EST/EDT, UTC-5/-4) time zone.
Numbers in the 354 NPA are issued in central office (CO) blocks of 10,000 to local exchange carriers, who then assign them to subscribers. Because Canada uses a competitive carrier model under CRTC oversight, multiple carriers — both incumbent and competitive — hold blocks within 354. The current carrier of record for any specific number can be looked up via the Canadian Local Number Portability Consortium, but the originally issued carrier is no longer a reliable signal of who actually serves that line.
If you receive a call from a number beginning with 354, the caller is either physically located in or has historically been associated with Greater Montreal suburbs (second overlay). The same applies to overlay codes 450, 579: any of these area codes can correspond to a phone in the same geography, and many households carry numbers from two or three different overlays simultaneously across landlines and mobile devices.
To call a number in 354 from outside Canada and the United States, dial your country's international access prefix, then +1 354 followed by the 7-digit local number. Within the NANP, simply dial 1 followed by all 10 digits — or just the 10 digits if you are also located in an overlay region where 7-digit local dialling is no longer permitted.
Frequently asked questions
Where is area code 354?
Area code 354 serves Greater Montreal suburbs (second overlay) in Quebec, Canada.
What time zone is 354?
Numbers in 354 are in the Eastern Time (EST/EDT, UTC-5/-4) time zone.
Is 354 a toll-free or mobile-only code?
No. Canadian area codes are geographic — they apply to both landline and mobile numbers in Greater Montreal suburbs (second overlay). Toll-free codes in the NANP (800, 833, 844, 855, 866, 877, 888) are a separate category.
Why do I see calls from 354 if I do not know anyone there?
Two reasons. First, mobile portability: someone who moved away from Quebec can keep their 354 number anywhere in the world. Second, scam callers frequently spoof Canadian area codes to appear local. If you do not recognise the number, it is generally safe to let it go to voicemail.