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A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls. For the calling party, a call to a toll-free number from a landline is free of charge. A toll-free number is identified by a dialing prefix similar to an area code. The specific service access varies by country.
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.
The National Center for Missing & Exploited Children (NCMEC) is a private, nonprofit organization established in 1984 by the United States Congress.In September 2013, the United States House of Representatives, United States Senate, and the President of the United States reauthorized the allocation of $40 million in funding for the organization as part of Missing Children's Assistance ...
Kars4Kids is a Jewish nonprofit car donation organization based in Lakewood, New Jersey in the United States. Kars4Kids is a 501(c)(3) nonprofit organization that states that its mission is "to fund educational, developmental and recreational programs for low-income youth" through programs largely facilitated by its sister charity Oorah, which focuses on Jewish children and families.
This led to expressions involving the square roots of negative numbers, and eventually to the definition of a new number: a square root of −1, denoted by i, a symbol assigned by Leonhard Euler, and called the imaginary unit. The complex numbers consist of all numbers of the form + where a and b are real numbers.
Infomercial. An infomercial is a form of television commercial that resembles regular TV programming [1] yet is intended to promote or sell a product, service or idea. It generally includes a toll-free telephone number or website. [2] Most often used as a form of direct response television (DRTV), they are often program-length commercials [1 ...
Misdialed call. A misdialed call or wrong number is a telephone call or text message to an incorrect telephone number. This may occur because the number has been physically misdialed, the number is simply incorrect, or because the area code or ownership of the number has changed. In North America, toll-free numbers are a frequent source of ...
Toll-free directory assistance. In the U.S., directory assistance for companies with toll-free "800 numbers" (with area codes 800, 833, 844, 855, 866, 877, and 888) was available from toll-free directory assistance, reachable by dialing 1-800-555-1212, for many decades until it was discontinued in 2020.
RespOrg. A RespOrg, or responsible organization, is a company that maintains the registration for individual toll-free telephone numbers In the North American Numbering Plan by means of the distributed Service Management System/800 database. RespOrgs were established in 1993 as part of a Federal Communications Commission order instituting toll ...
800 (eight hundred) is the natural number following 799 and preceding 801. It is the sum of four consecutive primes (193 + 197 + 199 + 211). It is a Harshad number ...