Where is area code 289?
NANPA assigns 289 to Ontario. The source report does not provide city-level coverage for this record, so this page does not guess a particular city. Browse other codes in Ontario
289 is an in-service Canada area code assigned to Ontario. It identifies a numbering region, not a caller’s current location.
NANPA assigns 289 to Ontario. The source report does not provide city-level coverage for this record, so this page does not guess a particular city. Browse other codes in Ontario
View the official area-code maps ↗. Maps show numbering areas, not a caller’s location.
NANPA lists Eastern for this numbering area. These are numbering-region time zones, not a caller’s current location.
An area code can span more than one time zone. Local daylight-saving rules may differ.
The NANPA source lists 365, 742, 905 in the same overlay complex. An overlay can serve the same broad numbering area; individual numbers still do not prove where a person is.
Use the North American country calling code +1 followed by the three-digit area code and seven-digit local number. For example, write the pattern as +1 289 XXX XXXX. Local dialing rules and charges depend on your location and provider. Check a supported dialing format or check NANPA’s 10-digit dialing list.
The Canadian Numbering Administrator listed 772 in-service prefixes for this area code on 2026-09-28. These are exchange-area and company assignments, not active-number or current-carrier records.
| Exchange area | In-service prefixes |
|---|---|
| Hamilton | 71 |
| Oakville | 39 |
| Oshawa | 36 |
| St. Catharines-Thorold | 35 |
| Brampton | 30 |
| Assignment company | In-service prefixes |
|---|---|
| TELUS Integrated Communications | 91 |
| Fibernetics Corporation | 89 |
| Iristel Inc. | 71 |
| Rogers Communications Canada Inc. (Wireless) | 67 |
| InnSysVoice Corp | 64 |
772 in-service prefixes are listed for this area code. Check a Canadian area code and prefix against CNA assignments. The exchange area and company describe the original code assignment, not where a caller is now.
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The displayed number may be spoofed. Do not rely on an area code as proof of caller identity. If the caller claims to represent a business, end the call and contact that business using a number you found independently.
289 is assigned to Ontario, and the NANPA record associates it with Eastern time. A phone number does not reveal its owner’s current time zone. The clock above uses a representative time zone for the numbering area.
No. An area code is an assignment, and a person can travel, move, use internet calling, or display a spoofed number.
No. OfficialAreaCode has no live subscriber directory or spam-report database.