The 866 area code is a telephone area code serving toll-free numbers in the North American Numbering Plan. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 866 area code) below and access available caller information such as name, address, and more.
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Area code 866 does not serve a specific geographic location. Instead, it is used for toll-free numbers throughout the North American Numbering Plan (NANP).
Area code 866 is a Easily Recognizable Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 866 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, NANP AREA geographic region, and local calling area associated with the phone number.
| Company | Number of Prefixes |
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| Rate Center | Number of Prefixes |
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Lookup phone numbers starting with other NANP AREA area codes:
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