The exchange is the first three digits after the area code. For instance, in the phone number (123) 456-7890, the exchange is 456. You would enter 123-456 to search for locations nearest this exchange. An exchange usually covers a small geographical area, so it provides a more accurate location than its area code.

The following formats are acceptable for area codes and exchanges:

• 123-456
• (123) 456
• 123/456

A full phone number using any of these formats, such as (123) 456-7890, is also acceptable, although the last four digits are ignored.

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