Where Is the 866 Area Code?

No specific location is covered by area code 866. Toll-free lines, particularly those in nations included by the North American Numbering Plan, fall under the area code 866.

25 nations and territories in North America and the Caribbean are included in the North American Numbering Plan. This design uses a three-digit area code, a three-digit central office code, and a four-digit station number for all phone numbers.

The area code 866 is comparable to other prefixes that are used as toll-free numbers, such as 800, 844, and 888. All calls to numbers beginning with any of these prefixes, including area code 866, are free of charge because the owner of the phone number bears the expense.

Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.


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