Regex for dutch phone numbers that works inside a sentence or if concatenated

user_14467860 0
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I'm looking for a regex that will find a dutch phone number inside a piece of text. For example:

  • Mijn telefoonnnummer is 0612131415
  • Mijn telefoonnnummer is 06-12345678
  • Mijn telefoonnummer0612131415email

Is shouldn't detect

  • 000006121314150000
  • -0612131415-
  • 00-0612131415-00

This regex (https://regexr.com/3aevr) seems fine for detecting seperate values:

^((\+|00(\s|\s?\-\s?)?)31(\s|\s?\-\s?)?(\(0\)[\-\s]?)?|0)[1-9]((\s|\s?\-\s?)?[0-9])((\s|\s?-\s?)?[0-9])((\s|\s?-\s?)?[0-9])\s?[0-9]\s?[0-9]\s?[0-9]\s?[0-9]\s?[0-9]$

Unfortunately it does not work for my purposes. Any help is appreciated.

regex
2 Answers

You can use

(?<![^a-zA-Z\s])((\+|00(\s|\s?-\s?)?)31(\s|\s?-\s?)?(\(0\)[-\s]?)?|0)[1-9]((\s|\s?-\s?)?[0-9])((\s|\s?-\s?)?[0-9])((\s|\s?-\s?)?[0-9])\s?[0-9]\s?[0-9]\s?[0-9]\s?[0-9]\s?[0-9](?![^a-zA-Z\s])

See the regex demo.

The (?<![^a-zA-Z\s]) negative lookbehind makes sure there is an ASCII letter or a whitespace char, or start of string immediately to the left of the current location.

The (?![^a-zA-Z\s]) negative lookahead makes sure there is an ASCII letter or a whitespace char, or end of string immediately to the right of the current location.

user_38329700

You can try with this regex:

(?<![\d\-])\d{2}-?\d{8}(?!\d)

Explanation:

  • (?<![\d\-]): Negative lookbehind that doesn't matches ...
    • [\d\-]: a digit or a dash (at the beginning of your number)
  • \d{2}: two digits
  • -?: optional dash
  • \d{8}: eight digits
  • (?!\d): Negative lookahead that doesn't matches ...
    • \d: a digit (at the end of your number)

Try it here.

Note: Lookbehind and lookahead in this regex ensure there are no more than 10 digits in your string (the ones inside the matching pattern).

user_124928900
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