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Learn about the history, format and categories of telephone numbers in Singapore, regulated by the Info-communications Media Development Authority. Find out how to call Singapore and other countries from Singapore with different access codes.
Learn about the format, prefixes, and area codes of Canadian telephone numbers, as well as the history and regulation of the North American Numbering Plan. The country code for Canada is 1, which is used for international access and trunk prefix.
Learn about the history and features of toll-free numbers, also known as freephone numbers, that are billed for all incoming calls. Find out how to get a toll-free number with a vanity prefix or a specific area code in different countries.
Learn about the history, assignment, and operation of toll-free telephone numbers in the North American Numbering Plan, which have the area code prefixes 800, 833, 844, 855, 866, 877, and 888. Find out how to call or get a toll-free number in the U.S. or Canada, and what are the special cases and restrictions.
Learn how to recognize legitimate AOL websites, requests, and communications to keep your account secure. Avoid scams and phishing attempts by checking the URL, sender, icons, and links of any AOL emails or notifications.
Learn about the history and current status of telephone area codes in Toronto, Ontario, Canada. Find out how 647 is an overlay area code for mobile and competitive services, while 416 is the original and dominant code for landlines.
Find the area code for any location in North America, including the United States, Canada, and some Caribbean countries. The web page shows the numerical order, territory, date, and notes for each area code, including the overlay and split history.
Learn about the telephone area codes in Alberta, Canada, that form an overlay with area code 403 of southern Alberta, and northern Alberta's 780. See the history, service area, and central office codes of each area code.