Manhattan’s area code was influenced by rotary phone design


Back when the rotary phones were in use, digits 9 or 0 took longer to dial since they were at the end of the rotary disk and had to spin all the way to the other side. Since New York City was the center of America’s business, dialing Manhattan’s area code was prioritized to be the quickest possible combination to dial- 212.

“212” is the fastest possible area code to dial; due to the way the switching equipment worked, the first and third digits could not be a “1,” and the second digit had to be a “1” or a “0.” So “212,” at a total of five clicks on the dial, was the fastest.”

Srouce: Core77


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