Guide: Will There Ever Be An End To 10 Digit Phone Numbers?
In the mid-1990s, the US phone system introduced overlay area codes. These area codes were used to help connect different parts of the country. Before that, there was no area code in the United States where the middle digit was not a 0 or a 1. Whenever you see a middle-0 or middle-1 area code these days, it’s transferring from Ye Olde Bell System.
U.S. phone numbers are classified as area code (3 digits), prefix (3 digits), suffix (4 digits) for a total of 10 digits excluding country code (+1). Although it seems we have enough phone numbers to pass around, we really don’t.
Each suffix can contain only 10,000 assignable numbers (0000 through 9999). And since there are only 1,000 prefixes (000 to 999) per area code, this means that up to 10 million numbers (10,000 assignable numbers x 1,000 prefixes) can be assigned to each area code. Once the 10 million has expired, another area code must be entered into the system to get another 10 million.
Is the US in danger of one day being under-assignable? phone Numbers?
In 2007, it was reported that of the numbers we have, 582 million of them are in use, but again, that’s four-year-old statistics. We may have passed, if not exceeded, the 600 million mark.
We are still short of a significant number of assignable numbers, which leaves us at risk of running out. ..
If you were to look at this from the perspective of a network address, something over 40% of addresses are not good places to be – especially if you have nowhere to go. ..
If we ever hit the limit, what would be the solution?
The number 11 is the end of the 10 digits for 11 digits.
The new numbering system will start with 555-123-04567 and all existing numbers will be changed to this new number. New suffixes on old prefixes will be 10000 to 99999 and new suffixes on new prefixes will be 00000 to 99999. ..
Unless you can come up with a better idea, I’m going to have to decline.
Will There Ever Be An End To 10 Digit Phone Numbers?: benefits
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