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Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
*74 and 1174 — speed dial, which allows someone to quickly dial any of eight frequently called numbers using a one-digit code, from any phone on their line *75 — allows a total of 30 speed-call numbers with two digits *77 — activates Anonymous Call Rejection Service *82 and 1182 — releases Caller ID block on a call-by-call basis
An asterisk (*) indicates that the listed place name is the "default" place name for all addresses in the prefix, that is, that addresses for all ZIP codes beginning with that three-digit prefix will have that place name in the city portion of the address (example: 23219, 23224, and 23294 will all have "Richmond, Virginia" addresses, even if ...
Postal Code Meaning: How to Decipher the 5-Digit Number. The meaning behind postal codes is actually more intricate than you might assume. While some ZIP codes have taken on a life of their own in ...
Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.
Look at the area code: Start by comparing the phone number’s area code to the list of area codes you should never answer. If it’s on the list, there’s a good chance there’s a scammer on ...
The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, ...
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.