Exchange 437-312

Toronto, ON · Zayo Canada Inc. · OCN 8304. This is a numbering allocation fact, not subscriber identity.

Area code 437 · Toronto · Zayo Canada Inc.

Thousands ranges

437-312-0xxx · 437-312-1xxx · 437-312-2xxx · 437-312-3xxx · 437-312-4xxx · 437-312-5xxx · 437-312-6xxx · 437-312-7xxx · 437-312-8xxx · 437-312-9xxx