Area code 365 – Ontario
365 has served Ontario since 2013, split from 905. 706 of its 800 number blocks are allocated (88%). No carrier dominates: Other CLEC / VoIP 30.2%. It shares its geography with overlay codes 289, 742, 905, so local calls take all ten digits. FTC complaints naming a 365 caller ID totalled 430 in the 33 days to 30 October 2026 (231st of 422 ranked codes). Most of its numbers are in Markham, Hamilton, Brampton.
- Province
- Ontario
- In service since
- 2013
- Time zone
- Eastern
Who holds 365 number blocks
Share of the 706 assigned NXX blocks (88.2% of the 786 possible), across 1 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP30.2%
Spam complaints naming 365
FTC Do Not Call complaints where the caller ID was a 365 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 365
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 88.
Timeline
- 2013 365 goes into service, split from or overlaid on 905.
More about 365
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 365
Where is area code 365?
Ontario. It covers the same area as 289/365/742/905.
Is a call from 365 a scam?
Not by itself. 365 drew 430 FTC complaints in the 33 days to 30 October 2026, 231st 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 365 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 30.2%. 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 365?
Yes – ten digits for local calls in 365, 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.