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284 points nomilk | 1 comments | | HN request time: 0s | source
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iambateman ◴[] No.45766957[source]
Seeing 770-555-5555 on screen has always been a huge pet peeve for me. It really kills the suspension of disbelief for me.
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kid64 ◴[] No.45768577[source]
Recently I've noticed the 555 prefix being used less, in favor of prefixes starting with 1, which are also invalid in the real world.
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lwhi ◴[] No.45769232[source]
I thought 1 is the country prefix for the USA?
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phantom784 ◴[] No.45770869[source]
Technically it's the country code for the North American Numbering Plan, which is used by several other countries as well as the US.

But in this context it'd be the first digit of the area code, with no country code being used because the call is within the US. There are no area codes in the the North American Numbering Plan that start with a 1.

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extraduder_ire ◴[] No.45771076[source]
Have none starting with 1 been assigned, or is there some technical reason there are none?
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phantom784 ◴[] No.45771243[source]
Per Wikipedia https://en.wikipedia.org/wiki/List_of_North_American_Numberi...

"The syntax rules for area codes do not permit the digits 0 and 1 in the leading position."

My guess would be it's to avoid ambiguity with the fact that 1 is also the country code. If I recall correctly, historically, dialing the 1 was necessary for any long distance call (even if not international).

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1. ghaff ◴[] No.45771665[source]
>If I recall correctly, historically, dialing the 1 was necessary for any long distance call (even if not international).

You recall correctly. I haven't had a landline for a number of years now but I think it was still required latterly when I still had one. Don't think it was ever needed on cell (or maybe even valid) when I first got one at some point in the 1990s.