365
Area code
ONTARIO
Canada geographic area code, in service since 2013-03-25. Part of the 289/365/742/905 overlay complex — ten-digit dialing required.
Statusin service
Introduced2013-03-25
JurisdictionONTARIO, CANADA
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Area codes serve rate-center geographies, not municipal boundaries. “ONTARIO” identifies the jurisdiction, not an exact city footprint.
Change history
Recorded events for this NPA- 2013-01-24 NPA 365 to Overlay NPA 289/905 (Southern Ontario, Canada)
- 2013-03-25Area code 365 entered service (created from 905).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2013-01-24 | PL-448 ↗ | NPA 365 to Overlay NPA 289/905 (Southern Ontario, Canada) |
| 2012-09-27 | PL-440R1 ↗ | NPA 365 to Overlay NPA 289/905 (Southern Ontario, Canada) |
| 2011-05-31 | PL-420 ↗ | NPA 365 to Overlay NPA 289/905 (Southern Ontario, Canada) |