It can most likely be improved; any suggestions? EPP-style phone numbers use the format +CCC.NNNNNNNNNNxEEEE, where C is the 1–3 digit country code, N is up to 14 digits, and E is the (optional) extension. Jamal ♦ 34.5k 13 13 gold badges 125 125 silver badges 233 233 bronze badges. This means a three digit country code results in up to 12 additional digits, and a 1 digit country code could contain up to 14 additional digits.

4.3. Country calling codes or country dial-in codes are telephone number prefixes for reaching telephone subscribers in the networks of the member countries or regions of the International Telecommunication Union (ITU). I would suggest skipping a simple regular expression to test your phone number against, and using a library such as Google's libphonenumber (link to GitHub project).

Also, note that ITU E.164 defines the maximum length of a full international telephone number to 15 digits.

It needs to match the entire input string, and it can work for any US phone number with or without country code "1-". The leading plus sign and the dot following the country code are required. c#.net regex.

Regex : ^\+[0-9]{1,3}\. Our regular expression shows both as valid phone numbers. The calling chart above will help you find the dialing codes you need to make long distance phone calls to friends, family, and business partners around the globe. The numbers should start with a plus sign, followed by the country code and national number. Hence the [0-9]{0,14}$ a the end of the regex. Phone Number With Country Codes Validation Using ReactJS ... Generally we use regular expression to validate phone number which fails in many cases. 2.1. It can match dashes, periods, and spaces as delimiters, country code, and supports parentheses in the area code. Simply find and click the country you wish to call.

Using one of your more complex examples, 1-234-567-8901 x1234, you get the following data out of libphonenumber (link to online demo): Let's start with a simple expression that will check if the number has ten digits and nothing else: @Test public void whenMatchesTenDigitsNumber_thenCorrect() { Pattern pattern = Pattern.compile("^\\d{10}$"); Matcher matcher = pattern.matcher("2055550125"); assertTrue(matcher.matches()); } This expression will allow numbers … Introducing libphonenumber! For accurate phone number validation, we will use … Regular Expression to Matches a string if it is a valid phone number. For example +91 9677146866 is the correct number which exists, +91 2677146866 is also correct number which doesn't exists. Validate International Phone Numbers Problem You want to validate international phone numbers.

Ten-Digit Number . share | improve this question | follow | edited Jan 14 '15 at 20:27. The literal “x” character is required only if an extension is provided. Solution … - Selection from Regular Expressions Cookbook, 2nd Edition [Book] Regular Expressions to Validate Phone Numbers.

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