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The 555 exchange is not reserved in area codes used for toll-free phone numbers. This led to the video game The Last of Us accidentally including the number to a phone-sex operator. [9] The number "555-2368" (or 311-555-2368) is a carryover from the "EXchange 2368" ("Exchange CENTral") number common in telephone advertisements as early as the ...
The RespOrg is not the carrier. A Canadian carrier could be used for Canadian calls and a U.S. carrier for American calls; a user with many inbound local voice over IP numbers in multiple cities could convert toll-free calls on one main toll-free number to local calls in each city where it has a point of presence. Percentage Allocation routing
Therefore, American films and TV shows have used 555-xxxx numbers, in order to prevent a number used in such a work from being called. [12] The film Bruce Almighty (2003) originally featured a number that did not have the 555 prefix.
As these are not issued as standard business or residence lines, the use of a 555 number in fiction is almost universal. Only the 555-01xx range is officially reserved, though numbers outside this range are commonly used. Nevada uses 555 phone numbers for TTY (teletypewriter) or TDD (telecommunication device for the deaf) only lines. [25]
The NPI number can be obtained online through the National Plan and Provider Enumeration System (NPPES) pages on CMS's website. [3] Turnaround time for obtaining a number is from 1 to 20 days. NPI numbers can be searched on the CMS website listed in external links 'National Plan and Provider Enumeration System information from CMS'.
The first use of a national emergency telephone number began in the United Kingdom in 1937 using the number 999, which continues to this day. [6] In the United States, the first 911 service was established by the Alabama Telephone Company and the first call was made in Haleyville, Alabama, in 1968 by Alabama Speaker of the House Rankin Fite and answered by U.S. Representative Tom Bevill.
The acoustic tin can telephone, or "lovers' phone", has been known for centuries. [1] It connects two diaphragms with a taut string or wire, which transmits sound by mechanical vibrations from one to the other along the wire (and not by a modulated electric current). The classic example is the children's toy made by connecting the bottoms of ...
Direct-distance dialing (DDD) was first introduced in areas with common-control switching (panel and crossbar) in the 1950s.These areas had used 411 for directory assistance, and because of the ability of common-control switching to analyze the initial digits of a number in a "sender" before routing the call, these areas did not require the dialing of an initial 1 to initiate a long-distance call.