North American Numbers Source-cited · ownership disclosed
Area code
431
In service
Canada · since 2012

Manitoba (province-wide overlay)

Area code 431 is the first overlay for the entire Canadian province of Manitoba, introduced in 2012 over the same territory as 204.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Manitoba (province-wide overlay)
Type
geographic
Status
in service
In service since
2012
Projected exhaust
2035 Q3

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 431 is

All of Manitoba, Canada — same province-wide footprint as 204..

Communities served wholly or partly by 431:

WinnipegBrandonSteinbachPortage la PrairieThompson

Overlay covering the whole province; a 431 number can be anywhere in Manitoba.

B · Relationships

How it relates to other codes

The codes 431 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2012 204 Manitoba (Winnipeg) Base code that 431 overlays; both cover all of Manitoba.
Overlay · 2022 584 Manitoba (province-wide overlay) Third member of the same Manitoba overlay complex.
What's changing. Overlay of 204 covering all of Manitoba (added 2012). Not a split.
C · History

How 431 got here

2012-07-30
Mandatory 10-digit dialing began ahead of the new code.
Source: Wikipedia
2012-11
Area code 431 placed into service as a province-wide overlay of 204.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
581
Prefixes available
0

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 431 with another code →
Sources
Wikipedia ↗
Area codes 204, 431, and 584
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.