lars@lemmy.sdf.org to

MapPorn@lemmy.worldEnglish · 1 year ago

the first map of North American area codes (1947)

8

28

the first map of North American area codes (1947)

lars@lemmy.sdf.org to

MapPorn@lemmy.worldEnglish · 1 year ago

8

Chat

lars@lemmy.sdf.orgOP
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1 year ago
Yes — and the following three digits are called “exchanges”
- lars@lemmy.sdf.orgOP
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  1 year ago
  And it looks like only single-area code states had 0 as their second digit

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