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Check the formatting of the phone number and compare with that country’s format.(You can either use the IP address of the user to identify this or ask for country-input ) Here are the steps which you need to take before you store a phone number in a database. (mobile or landline)īest way to store Phone Number in a database. Key challenges in storing a phone number: Hence, storing a phone number is more than deciding what data types of use on a database. There can be up to 15 digits in an E.164 number.
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Based on this formating, the number contains a country code (CC), a national destination code (NDC), and a subscriber number (SN). This will prevent data duplication and standardise your formatting.Į.164 is an international format which defines a general format for international telephone numbers. Therefore, it is highly recommended that the phone numbers are stored along with their county code to avoid data ambiguity. It is divided into various parts which carry information about the regions associated with the number and are designed to be globally unique. Just like dates, a phone number is not just a sequence of random numbers. Most of these arguments are one dimensional and ignores the real challenges behind storing phone numbers. But, the Internet forums are divided on this topic leading to confusion. Yet, many companies still ignore them and end up collecting invalid or duplicate data.Īt the heart of this problem, lies a simple question - should you store a phone number as an integer or as a string in a database. How often have you opened your customer database and spent hours cleaning and formatting phone numbers? It is the most common problem hampering the efficiency of your business.