Lesson plan
Area code 456
Area code 456 is a telephone area code in the North American Numbering Plan that has been withdrawn from use and is available for a new assignment. The area code was in use as non-geographic area code from 1993 until 2017 to route inbound calls from outside the territories of the North American Numbering Plan to specific carriers for carrier-specific services. In November 2017, the area code 456 was withdrawn because of lack of demand. It was returned to the pool of unassigned codes in 2023 and is available for future assignment as a geographic NPA.
Article summary
Area code 456 is a telephone area code in the North American Numbering Plan that has been withdrawn from use and is available for a new assignment. The area code was in use as non-geographic area code from 1993 until 2017 to route inbound calls from outside the territories of the North American Numbering Plan to specific carriers for carrier-specific services. In November 2017, the area code 456 was withdrawn because of lack of demand. It was returned to the pool of unassigned codes in 2023 and is available for future assignment as a geographic NPA.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.