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ABBREVIATED DIALING CODES - N11
Abbreviated dialing codes enable callers to connect to a location in the phone network that
otherwise would be accessible only via a seven or ten-digit telephone number. The network
must be pre-programmed to translate the three-digit code into the appropriate seven or ten-digit telephone number and route the call accordingly.
- Among abbreviated dialing arrangements, "N11" codes are three-digit codes of which the
first digit can be any digit other than 1 or 0, and the last two digits are both one. There are
only eight possible N11 codes, making N11 codes among the scarcest of numbering
resources. Following are the existing N11 code assignments:
211: Assigned for community information and referral services
311: Assigned nationwide for non-emergency police and other government services
411: Unassigned, but used virtually nationwide by carriers for directory assistance
511: Assigned for traffic and transportation information
611: Unassigned, but used broadly by carriers for repair service
711: Assigned nationwide for access to Telecom Relay Services
811: Unassigned, but used by local exchanged carriers for business office use
911: Unassigned, but used nationwide for emergency services
- N11 codes "011" and "111" are unavailable because "0" and "1" are used for switching and
Background on N11 Proceeding
- In 1992, the Commission adopted a Notice of Proposed Rulemaking (N11 NPRM) proposing
that incumbent local exchange carriers be required to provide abbreviated dialing
arrangements. Subsequent to the N11 NPRM, various parties asked the Commission to
designate N11 codes to facilitate network access to Telecommunications Relay Service
(TRS) for individuals with hearing or speech disabilities, to federal and state government
services, and to non-emergency police services.
- In 1997, the Commission released the N11 First Report and Order and FNPRM in which it
assigned 311 on a nationwide basis for non-emergency police services. The Commission also
granted the request for an N11 code to reach Telecommunications Relay Services (TRS),
assigning 711 nationwide for this use.
Department of Transportation Petition for Assignment
- In March 1999, the U. S. Department of Transportation (U.S. DOT) filed a petition for
assignment of a nationwide N11 code to be used by state and local governments to deliver
travel-related information to the public.
- Travel information, including the status of roadway construction, accident locations, and
alternate traffic routes, is currently provided by government agencies across the country
often with each municipality and transportation agency having its own separate telephone
- The U.S. DOT contends that widespread use of an N11 code for travel-related information
would reduce vehicular congestion and pollution, lower fuel consumption, provide superior
traffic management, and enhance roadway safety.
- According to the U.S. DOT, each year there are six million vehicular accidents, 42,000
deaths, and 5.2 million injuries, at an approximate cost of $200 billion annually.
- According to the U.S. DOT, at least 43 states and 42 major metropolitan areas, and over 100
transit agencies currently operate traveler information systems, using the telephone as the
primary means of communication. In the Washington, DC - New York City corridor there
are eleven different telephone numbers through which to obtain traffic and transit status.
- During a three-month period in 1997, when Kentucky residents dialed 211 to reach the
traveler information service and Ohio residents dialed 333-3333 to reach the same traveler
information, the Kentucky Transportation Cabinet reports that 72 percent more calls were
made to the abbreviated dialing code than to 333-3333.
Information and Referral Systems Petition for Assignment
- In May 1998, the Alliance of Information and Referral Systems filed a petition for
nationwide assignment of an abbreviated dialing code for access to community information
and referral services.
- The Information and Referral Petitioners contend that there is a demonstrated need for an
easy to remember, easy to use abbreviated dialing code that will enable persons in need to be
directed to services providing free information and referrals to community service
- Information and referrals to community service organizations include, housing assistance,
maintaining utilities, food, finding counseling, hospice services and services for the aging,
substance abuse programs, or dealing with physical or sexual abuse.
- According to the petitioners, the abbreviated dialing code 211 is currently active in at least
one locality in Connecticut and a thirteen-county area in Atlanta, Georgia. Additionally,
petitions for 211 had been filed with local public utility commissions in three other states
(Massachusettes, Ohio and Wisconsin) and a county in Michigan, and 11 petitions had been
approved in three other states (Alabama, North Carolina and Utah). Finally, statewide
information and referral models have been developed in three other states (Florida, Texas