Area code 354 vs 450
354 and 450 are overlay codes: they cover the same ground in Quebec, and a number in one is a local call to the other. 450 is the original, in service since 1998. 354 was added in 2022 because the first was filling up – that is what an overlay is for. Today 354 has 64 of 800 blocks assigned (8.0%) and 450 has 775 of 800 (96.9%), so a new number in the area now almost always comes from 354. 450 appears in the complaint data with 345 complaints in the window; 354 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
| 354 | 450 | |
|---|---|---|
| In service since | 2022 | 1998 |
| Region | Quebec | Quebec |
| Blocks assigned | 64 of 800 (8%) | 775 of 800 (96.9%) |
| Largest block holder | Other CLEC / VoIP 42.2% | Other CLEC / VoIP 15.6% |
| Complaints, 28 Sep – 30 Oct 2026 | not in the data | 345 (#281) |
| Rate centers | 54 | 130 |
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 354 and 450?
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 354 and 450?
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 354 or 450?
Whichever has blocks left – currently 354, at 8.0% allocated against 96.9% for the other. Carriers draw from the code with free blocks, which is why the newer code spreads over time.
Is 354 or 450 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: 354 · 450. All codes in Quebec: Quebec area codes.