The 711 number in the North American Numbering Plan (NANP) is distinct and serves a special purpose:

Telecommunications Relay Services (TRS): 711 is designated for accessing Telecommunications Relay Services, which facilitate telephone communication for individuals with hearing or speech disabilities. By dialing 711, users can connect with a TRS operator, who assists in relaying conversations between a person using a text telephone (TTY) and another party.

Nationwide Accessibility: The 711 code provides a uniform, easy-to-remember access point to TRS services across the United States, ensuring that individuals with hearing or speech impairments have equitable access to telecommunications.