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8-1-1


8-1-1 is an N-1-1 telephone number in Canada and the United States. In Canada, the number is used for non-urgent health services. In the United States, 8-1-1 provides a uniform national phone number to access local utility location services.

In March of 2005, the United States Federal Communications Commission (FCC) made 8-1-1 the universal number for the 71 regional services that coordinate location services for underground public utilities in the U.S. Before that time, each of these "call before you dig" services had its own 800 number, and the FCC and others wanted to make it as easy as possible for everyone planning an excavation to call first.

This safety measure not only helps prevents damage that interrupts telecommunications, but also the cutting of subterranean power lines, water mains, and natural gas pipes. Underground utilities are located via color-coded markings typically up to and not past the user's service connection or meter. Lines on the other side of the meter or service connection are considered to be part of the customer's property and will typically not be located by these services. Establishment of an abbreviated dialing number for this purpose was required by the Pipeline Safety Improvement Act of 2002.

The use of 8-1-1 for "call before you dig" services was long established in California and Nevada, through an organization known as Underground Service Alert, before the FCC mandated its use for this purpose.

Prior to 2005, the FCC had never officially assigned 8-1-1 for any service, but did not prevent its use either. Traditionally, 8-1-1 has been a direct line to the business office of the telephone company providing service on the line. From there, one may perform some or all of the following operations:


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