The structure of telephone numbers within the Canadian numbering plan adheres to a specific configuration: a three-digit area code, a three-digit central office code (also known as an exchange code), and a four-digit subscriber number. This ten-digit arrangement, often visually separated for clarity, is typically presented as (AAA) NXX-XXXX, where ‘A’ represents the area code digits, ‘N’ represents a digit 2 through 9, and ‘X’ represents any digit from 0 through 9. For example, a valid number would be (613) 555-1212.
Adherence to this numerical structure is crucial for efficient call routing and network operation within the Canadian telecommunications infrastructure. This standardized presentation facilitates accurate dialing, storage, and processing of contact information. Moreover, understanding the historical context reveals how this system evolved to accommodate increasing demand and geographic expansion of telecommunication services across the country.
