NANPA has not yet authorized the use of 494 area code. Area Code 494 is officially planned to be a General Purpose area code that will be assigned to a geographic location in North America (the United States, Canada, and a few Caribbean countries) if needed.
According to an October 2020 analysis, the current numbering plan will be exhausted after 2050. As a result, area code 494 is also reserved for future use as an Expansion code if it becomes necessary to expand the current 10-digit dialing format. The N9X (that is, all area codes with ‘9’ as the middle digit) range of area codes is the most commonly proposed method of expanding to longer-than-ten digit numbers.
Even though 494 is registered with NANPA, it is not a valid area code because it has not yet been assigned to a geographical region. Because phone number 494-xxx-xxx does not exist, consider any call from area code 494 to be spam.
When an existing area code is nearing the end of all the available phone numbers in an area, we call it area code exhaust.
Also Read: 468 area code, area code 926, area code 457, 328 area code
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