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Several other prefixes, including 800-484, 800-703, 800-744, and 800-904 are reserved by the FCC. NPA-911 is forbidden as 9-1-1 is an emergency telephone number . (This is less restrictive than the rules prohibiting all three-digit N-1-1 codes as exchanges in all geographic area codes.)
950-xxxx — Feature group code for access to a carrier from a non-subscriber location. The feature requires the customer dial a 950-xxxx number and enter a calling card number and destination telephone number. It was originally used for locations where 101-xxxx dialing was not possible.
A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme. In other countries, both the prefix and the number may have ...
Codes 880 through 882 were used (until 1 April 2004) to allow international customers to access toll-free numbers they otherwise could not by paying the international portion of the toll. 880 was paired with 800, 881 with 888, and 882 with 877. [21] 888: toll-free telephone service: March 1, 1996: created; 889: not in use; available for toll ...
(03-Abcdef) where A is 1/2/3/4/5 for Alfa and 0/6/7/8/9 for Touch: 70 +8 (70-Abcdef) where A is 1/2/3/4/5 for Alfa and 0/6/7/8/9 for Touch: 71 (71-Abcdef) where A is 1/2/3/4/5 for Touch and 0/6/7/8/9 for Alfa: 76 79 01 06 05 08 (76-Abcdef) where A is 1/2/3/4/5 for Alfa and 0/6/7/8/9 for Touch, until 01–2011, only 76-6 & 76-7 are available ...
Some older 0800 numbers still in use have a shorter number length. The former 0500 freephone number range was withdrawn on 5 June 2017. [21] In Ukraine, toll-free numbers have the "0 800" prefix, followed by 2 digits for the carrier code, then 4 digits for the client number - i.e., 0 800 YYXXXX. Before October 2009, the "8800" prefix was used.
The American Telephone & Telegraph Company (AT&T) first introduced 800 toll-free service in 1967. [2] When AT&T was the only Interexchange carrier, local exchange carriers automatically routed all toll-free calls directly to an AT&T point of presence without performing a translation from the toll-free number to the terminating telephone number. [3]
[4] [5] In practice, some RespOrgs do abuse the system by stockpiling millions of toll-free numbers for advertising purposes, because the enforcement of the regulations has been weak and sporadic. This situation has led to periodic creation of overlay plan toll-free area codes to prevent exhaustion of the SMS/800 available number pool.