Area code 474 vs 639
474 and 639 are overlay codes: they cover the same ground in Saskatchewan, and a number in one is a local call to the other. 639 is the original, in service since 2013. 474 was added in 2021 because the first was filling up – that is what an overlay is for. Today 474 has 98 of 800 blocks assigned (12.2%) and 639 has 776 of 800 (97.0%), so a new number in the area now almost always comes from 474. 639 appears in the complaint data with 298 complaints in the window; 474 does not appear at all, which is what you would expect of a code that is barely used so far. Neither code is better or safer than the other. They are the same geography, the same carriers and the same dialing rules; the difference is only how long each has existed and how full it is.
Side by side
| 474 | 639 | |
|---|---|---|
| In service since | 2021 | 2013 |
| Region | Saskatchewan | Saskatchewan |
| Blocks assigned | 98 of 800 (12.2%) | 776 of 800 (97%) |
| Largest block holder | Other CLEC / VoIP 19.4% | Other CLEC / VoIP 19.7% |
| Complaints, 28 Sep – 30 Oct 2026 | not in the data | 298 (#302) |
| Rate centers | 71 | 202 |
Block share is allocation by the numbering administrator, not subscribers. Complaint counts cover 28 Sep – 30 Oct 2026 and measure how often each code is spoofed on caller ID.
Frequently asked
What is the difference between area codes 474 and 639?
None geographically – they overlay the same area, so the difference is age and how many numbers are left.
Do I need to dial the area code between 474 and 639?
Yes. Overlay areas use ten-digit dialing for local calls, including between the two codes. Seven digits reaches a recording.
Will a new number be 474 or 639?
Whichever has blocks left – currently 474, at 12.2% allocated against 97.0% for the other. Carriers draw from the code with free blocks, which is why the newer code spreads over time.
Is 474 or 639 more likely to be a spam call?
The data does not support a comparison: only one of the two appears in the complaint window.
Sources
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- Canadian Numbering Administrator – CO Code Status, data date 2026-10-31, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
Each code on its own: 474 · 639. All codes in Saskatchewan: Saskatchewan area codes.