Area code 431 – Manitoba
431 has served Manitoba since 2012, split from 204. 584 of its 800 number blocks are allocated (73%). No carrier dominates: Other CLEC / VoIP 28.1%. It shares its geography with overlay codes 204, 584, so local calls take all ten digits. Spam complaints are comparatively rare: 258 in the 33 days to 30 October 2026, 318th of the 422 codes with five or more complaints. Most of its numbers are in Winnipeg, Portage La Prairie, Stonewall.
- Province
- Manitoba
- In service since
- 2012
- Time zone
- Central
Who holds 431 number blocks
Share of the 584 assigned NXX blocks (73% of the 786 possible), across 1 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP28.1%
Spam complaints naming 431
FTC Do Not Call complaints where the caller ID was a 431 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 431
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. Showing the largest 5 of 148.
Timeline
- 2012 431 goes into service, split from or overlaid on 204.
More about 431
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 431
Where is area code 431?
Manitoba. It covers the same area as 204/431/584.
Is a call from 431 a scam?
Not by itself. 431 drew 258 FTC complaints in the 33 days to 30 October 2026, 318th of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 431 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 28.1%. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 431?
Yes – ten digits for local calls in 431, because it shares its area with another code.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.