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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.
A Universal International Freephone Number (UIFN) is a worldwide toll-free "800 number" issued by the International Telecommunication Union. Like the 800 area code issued for the North American Numbering Plan in the United States and Canada and 0800 numbers in many other countries, the call is free for the caller while the receiver pays the ...
RespOrgs were established in the U.S. in 1993 and Canada in 1994 to provide toll free number portability using the Service Management System ( SMS/800) database. Calls from Canada and the U.S., intrastate and interstate, could terminate at the same 1‑800 number, even via different carriers.
NIST holds patents on behalf of the Federal government of the United States, with at least one of them being custodial to protect public domain use, such as one for a Chip-scale atomic clock, developed by a NIST team as part of a DARPA competition. Controversy regarding NIST standard SP 800-90
The National Do Not Call Registry is a database maintained by the United States federal government, listing the telephone numbers of individuals and families who have requested that telemarketers not contact them.
Taxation in the United States. The Internal Revenue Service ( IRS) is the revenue service for the United States federal government, which is responsible for collecting U.S. federal taxes and administering the Internal Revenue Code, the main body of the federal statutory tax law.
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.
988 (sometimes written 9-8-8) is a telephone number used in some North American (NANP) countries for a suicide prevention helpline. In the United States, it is known as the 988 Suicide & Crisis Lifeline (formerly the National Suicide Prevention Lifeline and the number 1-800-273-8255). In Canada, it is known as the 9-8-8 Suicide Crisis Helpline.
Staff members at these call centres take calls from clients wishing to make reservations or other inquiries via a public number, usually a 1-800 number. These centres may operate as many as 24 hours per day, seven days a week, depending on the call volume the chain receives.
Area code 900 is a telephone area code in the North American Numbering Plan for premium-rate telephone numbers. Area code 900 was installed in 1971. [1] Premium rate services are dialed in the format 1-900-XXX-XXXX. This is often called a 900 number or a 1 900 number ("one-nine-hundred").