Guide: Will There Ever Be An End To 10 Digit Phone Numbers?
Not so many moons ago, in the mid-1990s, overlay area codes were introduced in the US phone system. 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 transfers 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?
A total of 1.3 billion can be allocated phone numbers in the US, and of course the wireless carriers have the lion’s share of that. 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. To answer the question right away, no, we don’t run the risk of running out of numbers, but we still have less than 50% of our assignable numbers left. If you were to look at this from the perspective of a network address, something over 40% uses isn’t such a good place to be – especially if you have nowhere to go.
If we ever hit the limit, what would be the solution?
I would guess, a 5 digit suffix that means the end of the 10 digits for 11 digits. The way it would probably work is if you phone number was 555-123-4567, this would be changed to 555-123-04567. All existing numbers will have a zero added to the front of the suffix to carry them over to the new system. New suffixes on old prefixes would be 10000 to 99999 and new suffixes on new prefixes would be 00000 to 99999. .. unless you can come up with a better idea?
Will There Ever Be An End To 10 Digit Phone Numbers?: benefits
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