What are the toll-free phone prefixes in the United States?


Quick Answer

Area codes 800, 844, 855, 866, 877 and 888 are the toll-free telephone prefixes in the United States. Toll-free calls permit the caller to contact a business or individual from a land-line telephone without being charged for the call. Charges for the use of a toll-free number are paid by the subscriber.

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Full Answer

The 800 area code was established in 1966 by the North American Numbering Plan. Calls were routed through the Wide Area Telephone Service system. With the advance of technology, toll-free calls began to go through intelligent network systems in the 1980s.

The 888 area code followed in 1996. The third toll-free area code created was 877 in 1998. Additional toll-free area codes established were 866 in 2000, 855 in 2010, and 844 in 2013. Area codes reserved for future expansion include 833, 822, 889 and 880 through 887. The prefix 811 is not available, as it is used to alert utilities before digging occurs near underground electrical and cable wires or water and natural gas pipes.

The 855 area code was established in 2010. Callers who are deaf, hard of hearing, or speech-impaired use the 855 area code to access the Public Switched Telephone Network. The network handles the Telecommunications Relay Service and Message Relay Service.

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