Area code 306 vs 639
306 and 639 are overlay codes: they cover the same ground in Saskatchewan, and a number in one is a local call to the other. 306 is the original, in service since 1947. 639 was added in 2013 because the first was filling up – that is what an overlay is for. Today 306 has 777 of 800 blocks assigned (97.1%) and 639 has 776 of 800 (97.0%), so a new number in the area now almost always comes from 639. In the 33 days to 30 October 2026, 306 drew 361 FTC complaints against 298 for 639 – 271st and 302nd of 422 ranked codes. Older codes are spoofed more because they look more established. 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
| 306 | 639 | |
|---|---|---|
| In service since | 1947 | 2013 |
| Region | Saskatchewan | Saskatchewan |
| Blocks assigned | 777 of 800 (97.1%) | 776 of 800 (97%) |
| Largest block holder | Other CLEC / VoIP 3% | Other CLEC / VoIP 19.7% |
| Complaints, 28 Sep – 30 Oct 2026 | 361 (#271) | 298 (#302) |
| Rate centers | 229 | 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 306 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 306 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 306 or 639?
Whichever has blocks left – currently 639, at 97.0% allocated against 97.1% for the other. Carriers draw from the code with free blocks, which is why the newer code spreads over time.
Is 306 or 639 more likely to be a spam call?
On the complaint data, 306 appears more often. But spoofing drives those counts, so this is about which code gets imitated, not which numbers are real.
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: 306 · 639. All codes in Saskatchewan: Saskatchewan area codes.