# Question: How Long Can A Phone Number Be?

## Will we ever run out of phone numbers?

With ten digits, assuming a non-zero first digit, you can have 9,000,000,000 phone numbers.

The population of the US (2012) is 313.9 million, or 313,900,000.

[2] estimates that the US population will hit a billion in 2100, so a few years from then is probably when we will run out of phone numbers..

## Can phone numbers be longer than 10 digits?

In addition, many places have area codes of more than three digits. Phone numbers anywhere can have a maximum of 15 digits This is including the country code, but excluding any trunk prefix like 0 or 1… This is definded in an internationally agreed technical standard called ITU-T Recommendation E.

## How many phone numbers can there be?

Each three-digit area code has a capacity of 7,919,900 telephone numbers: NXX may begin only with the digits [2–9], providing a base of eight million numbers: (8 × 100 × 10000). However, to avoid confusion with the N11 codes, the last two digits of NXX cannot both be 1.

## What is the shortest phone number?

Thanks to the international phone numbering plan (ITU-T E. 164), phone numbers cannot contain more than 15 digits. The shortest international phone numbers in use contain seven digits. With all of this in mind, let’s look at the regular expression again after breaking it into its pieces.

## Does +44 stand for 07?

07 is the prefix used when dialing a British number inside the UK, while +44 is what used when dialing a British number outside the UK. … They are two different prefixes used for two different situations. So to convert phone number to international format, you just need to take off the 07 prefix and add +44.

## Is 411 still available?

Wireless telephone directory Consumers can opt in to listing their name and cellphone number with directory assistance services, such as 411. The information is currently not published in print or online directories.

## Are all US phone numbers 10 digits?

The standard American telephone number is ten digits, such as (555) 555-1234. The first three digits are the “area code,” which, in the past, indicated in what part of the country the phone was located.

## Which country has smallest phone number?

AlbaniaTelephone numbers in Albania – Wikipedia.

## Does the +44 replace the 0?

When you call a number in a different country you must replace the first zero from the area code with the international call prefix and the country code. … Northern Ireland’s country code: 44 (this is the UK country code)

## Do you drop the 0 when using 44?

The 44 signifies the UK international code and the leading ‘0’ has already been dropped. London phone numbers all have an 0203, 0207 or a 0208 prefix (020 is the actual London code). … Also when dialling from outside the UK you do not dial the initial 0.

## What is the oldest phone number?

In the early 1930’s, it was given the phone number “PE6-5000”— in today’s phone parlance the letters P and E become 7 and 3 respectively, giving it the number 212-736-5000. Still in use today, it’s the longest continually operating phone number.

## Why is 555 a fake number?

Narrator: The short answer is that most 555 numbers are not working numbers, so real people won’t be harassed if diehard fans try to call them. 555 was an exchange combination that was not used very often in the American telephone system. You may get a wrong number, or no number at all.

## What is a 16 digit number called?

The term primary account number refers to a 14-, 15-, 16-, or even up to 19-digit number generated as a unique identifier designated for a primary account. Primary account numbers are also called payment card numbers as they are found on payment cards like credit and debit cards.

## What does a 10 digit phone number mean?

In the United States and Canada, ten-digit dialing is the practice of including the area code of a telephone number when dialing to initiate a telephone call. When necessary, a ten-digit number may be prefixed with the trunk code 1, which is referred to as 1+10-digit dialing or national format.

## Can you Google search a phone number?

There are many ways of looking up a cell phone online, including using Google. You can easily do a free reverse phone number lookup with Google online. The search engine actually used to have a service, Phonebook Search Operator, that was specifically for those who wanted to look up a phone number.

## How do you call private?

To make an outgoing call with a hidden number on your mobile phone, dial the block code [*67] before the phone number that you wish to call.

## Is +44 the same as 0?

44 is the country code for the UK. 0 is the long distance dialling code within the UK, from STD (subscriber Trunk Dialling) used to access the ‘long distance’ or trunk network. You don’t need it if dialling the UK from overseas as the call arrives already on the trunk network.

## What is the maximum length of a mobile number?

Information. In the United States and other countries participating in NANP, the maximum length of a phone number is 10 digits. Internationally, phone lengths vary, but the ITU E. 164 states that phone numbers around the globe are recommended to not be longer than 15 digits.