289
Area code
ONTARIO
Canada geographic area code, in service since 2001-06-09. Part of the 289/365/742/905 overlay complex — ten-digit dialing required.
Statusin service
Introduced2001-06-09
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- 2021-06-07 NPA 742 to Overlay NPA 289/365/905 (Southern Ontario, Canada) – supersedes PL-550
- 2020-12-01 NPA 742 overlay on NPA 289/365/905 (Southern Ontario)
- 2013-01-24 NPA 365 to Overlay NPA 289/905 (Southern Ontario, Canada)
- 2000-10-25 NPA 289 To Overlay NPA 905 (Southern Ontario, Canada)
- 2001-06-09Area code 289 entered service (created from 905).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2000-10-25 | PL-243 ↗ | NPA 289 To Overlay NPA 905 (Southern Ontario, Canada) |