705
Area code
ONTARIO
Canada geographic area code, in service since 1957-01-01. Part of the 249/683/705 overlay complex — ten-digit dialing required.
Statusin service
Introduced1957-01-01
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- 2010-12-07 NPA 249 to Overlay NPA 705 (Ontario, Canada)
- 1957-01-01Area code 705 entered service.
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2010-12-07 | PL-414 ↗ | NPA 249 to Overlay NPA 705 (Ontario, Canada) |
| 2009-10-29 | PL-398R1 ↗ | NPA 249 to Overlay NPA 705 (Ontario, Canada) |