Example of Valid Phone Number

A phone number is an essential means of communication in our modern world. However, different countries and regions have varying formats for valid phone numbers. Understanding these formats is crucial to ensure effective communication across borders. In this article, we will explore various valid phone number formats used worldwide.

North American Numbering Plan (NANP):

The NANP is used in North America, including the United States, Canada, and many Caribbean countries. Valid phone Korea phone number data numbers within this plan consist of ten digits, divided into three parts: the three-digit area code, followed by a three-digit central office code, and finally, a four-digit line number. For example, (555) 123-4567.

International Numbering Plan:

phone number list

The International Numbering Plan, also known as E.164, is a global standard defined by the International Telecommunication Union (ITU). It provides a consistent format for phone numbers worldwide. A valid E.164 phone number begins with a plus sign (+), followed by the country code and the subscriber number. For instance, +1 555 123 4567.

European Numbering Plan:

The European Numbering Plan covers various European countries and follows a uniform format. It typically includes a country America Email code, followed by an area code and a local subscriber number. For example, +44 (0) 20 1234 5678. The “0” in parentheses is known as the trunk prefix, which is omitted when dialing from abroad.

Mobile Phone Numbers:

Mobile phone numbers often have their unique formats. In some countries, mobile numbers have a different number of digits than landline numbers. For example, in India, mobile numbers have ten digits, while landline numbers have eight digits. Additionally, some countries designate specific prefixes or numbering ranges for mobile phones, making it easier to identify them.


Valid phone number formats vary across countries and regions, and understanding these formats is crucial for effective communication. Whether you’re dialing domestically or internationally, being aware of the correct format ensures that your calls reach the intended recipients. By familiarizing ourselves with the different phone number formats used worldwide, we can connect with people across borders and overcome communication barriers.

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