Phone regex validation for Argentina

Question

I figured out a regular expresion for my country's phone but I've something missing.

The rule here is: (Area Code) Prefix - Sufix

• Area Code could be 3 to 5 digits
• Prefix could be 2 to 4 digits.
• Area Code + Prefix is 7 digits long.
• Sufix is always 4 digits long
• Total digits are 11.

I figured I could have 3 simple regex chained with an OR "|" like this:

/(\(?\d{3}\)?[- .]?\d{4}[- .]?\d\d\d\d)|(\(?\d{4}\)?[- .]?\d{3}[- .]?\d\d\d\d)|(\(?\d{5}\)?[- .]?\d{2}[- .]?\d\d\d\d)/

The thing I'm doing wrong is that \d\d\d\d doesn't match only 4 digits for the sufix, for example: (011) 4740-5000 which is a valid phone number, works ok but if put extra digits it will also return as a valid phone number, ie: (011) 4740-5000000000

Answer 1

You should use ^ and $ to match whole string

For example ^\d{4}$ will match exactly 4 digits not more not less.

Here is the complete regex pattern

^((\(?\d{3}\)? \d{4})|(\(?\d{4}\)? \d{3})|(\(?\d{5}\)? \d{2}))-\d{4}$

Online demo

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As per your regex pattern delimiter can be -,. or single space then try

^((\(?\d{3}\)?[-. ]?\d{4})|(\(?\d{4}\)?[-. ]?\d{3})|(\(?\d{5}\)?[-. ]?\d{2}))[-. ]?\d{4}$