N11 (Easily Recognizable Code) is a three-digit Telephone Number used in abbreviated dialing in some telephone administrations of the North American Numbering Plan (NANP).

N11 numbers are used to access to special services. For example:

  • 2-1-1: Community services and information
  • 3-1-1: Municipal government services, non-emergency number
  • 4-1-1: Directory assistance
  • 5-1-1: Traffic information or police non-emergency services
  • 6-1-1: Telephone company (telco) customer service and repair
  • 7-1-1: TDD and Relay Services for the deaf and hard of hearing
  • 8-1-1: Underground public utility location (United States);[1] non-emergency health information and services (Canada)
  • 9-1-1: Emergency services (police, fire, ambulance and rescue services)

4-1-1 and 6-1-1 are commonly used within the United States, but not officially assigned by the Federal Communications Commission.

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