Area code 431: Manitoba
Area code 431 is a Canadian province area code for Manitoba, on Central Time. It has 579 prefixes in service across 146 exchange areas, the largest being Winnipeg, Portage La Prairie and Stonewall. It shares its area with 204 and 584, so local numbers there can start with any of them. Local calls there take 10 digits.
Local time in area code 431
America/Winnipeg
Prefixes in service
579 of 792 possible
146 exchange areas
Area code 431 facts
| Location | Manitoba, Canada |
|---|---|
| Time zone | Central Time |
| Overlays | 204, 584 |
| Overlay of | 204 |
| In service since | November 3, 2012 |
| Local calls | 10 digits; toll calls 1 + 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
Which cities and towns use area code 431?
The Canadian Numbering Administrator records each prefix against an exchange area, usually named after its main town. These are the 431 exchange areas with the most prefixes in service. 134 smaller ones aren't listed.
| Exchange area | Prefixes |
|---|---|
| Winnipeg | 153 |
| Portage La Prairie | 15 |
| Stonewall | 11 |
| Brandon | 10 |
| Oakbank | 9 |
| Austin | 8 |
| Steinbach | 7 |
| Dauphin | 7 |
| Thompson | 7 |
| Strathclair | 7 |
| Starbuck | 7 |
| Anola | 7 |
Source: Canadian Numbering Administrator CO code status, file dated 2026-10-16. Each prefix holds up to 10,000 numbers.
How do I dial a 431 number?
NANPA's dialling plan for 431: local calls inside the code take 10 digits, toll calls 1 + 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 431 | 431-555-0147 |
|---|---|
| From another US or Canadian area code | 1-431-555-0147 |
| From outside North America | +1 431 555 0147 |
| E.164, for CRMs and SMS tools | +14315550147 |
When did area code 431 start?
Area code 431 went into service on November 3, 2012 as an overlay of 204. Today 431, 204 and 584 cover the same area as an overlay, which is why 10-digit dialling is needed for local calls there.
Tools for 431 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 431 number tells you where it was issued, not what it is now.
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Area code 431 questions
- What province is area code 431?
- Area code 431 is in Manitoba, Canada. Its largest exchange areas by number of prefixes are Winnipeg, Portage La Prairie, Stonewall, Brandon and Oakbank.
- What time zone is area code 431 in?
- Central Time.
- What area codes overlay 431?
- 204 and 584. An overlay adds a new code to the same area instead of splitting it, so neighbours can have different area codes and local calls need 10 digits.
- When did area code 431 start?
- Area code 431 went into service on November 3, 2012 as an overlay of 204.
- Is a 431 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
- How many phone numbers does area code 431 have?
- 579 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
Other area codes in Manitoba
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and exchange areas: Canadian Numbering Administrator CO code status, 2026-10-16. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.