Area Code 742
Area code 742 covers Brampton and nearby cities including St Catharines-Thorold, Hamilton, Ajax-Pickering in Ontario, in the Eastern Time.
Is a call from 742 a scam? Who called me from 742?
Cities in area code 742
Brampton, St Catharines-Thorold, Hamilton, Ajax-Pickering, Markham, Richmond Hill, Thornhill, Streetsville, Cooksville, Newmarket, Oshawa, Cobourg
Area codes by city
Carriers in area code 742
Area code 742 spans 149 prefixes, about 17% wireless. Top carriers: FGLTEL, INC. - ON, ROGERS COMMUNICATIONS CANADA INC., BEANFIELD TECHNOLOGIES INC. - ON, IXICA COMMUNICATIONS, INC.. Look up the carrier for a 742 number.
Other Ontario area codes
- 226 — London
- 249 — Sudbury
- 289 — Hamilton
- 343 — Ottawa
- 365 — Markham
- 382 — London
- 416 — Toronto
- 437 — Toronto
- 519 — London
- 548 — London
- 613 — Ottawa
- 647 — Toronto
- 683 — Lindsay
- 705 — Barrie
- 753 — Ottawa
- 807 — Thunder Bay
- 905 — Hamilton
- 942 — Toronto
Nearby area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.