Validationflags: g

International Phone Number (Loose)

Match international phone numbers in a variety of loose formats including country codes, area codes, and separators.

Available in

JavaScript / ECMAScript code

jsJavaScript

const re = new RegExp("\\+?[1-9]\\d{0,3}[\\s.\\-]?(?:\\(?\\d{1,4}\\)?[\\s.\\-]?){2,4}\\d{1,9}", "g");
const input = "+1 (415) 555-2671";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).

Python (re) code

pyPython

import re

pattern = re.compile(r"\+?[1-9]\d{0,3}[\s.\-]?(?:\(?\d{1,4}\)?[\s.\-]?){2,4}\d{1,9}")
input_text = "+1 (415) 555-2671"
for m in pattern.finditer(input_text):
    print(m.group(0))

Stdlib `re` module — no third-party dependency. Works on Python 3.6+.

Go (RE2) code

goGo

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`\+?[1-9]\d{0,3}[\s.\-]?(?:\(?\d{1,4}\)?[\s.\-]?){2,4}\d{1,9}`)
	input := `+1 (415) 555-2671`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}

Uses `regexp.MustCompile` (panics on bad patterns at startup) and `FindAllString` for all matches.

Pattern

regexengine-agnostic

\+?[1-9]\d{0,3}[\s.\-]?(?:\(?\d{1,4}\)?[\s.\-]?){2,4}\d{1,9}   (flags: g)

Raw source: \+?[1-9]\d{0,3}[\s.\-]?(?:\(?\d{1,4}\)?[\s.\-]?){2,4}\d{1,9}

How it works

\+? optionally matches a leading +. [1-9]\d{0,3} matches 1–4 digit country/area code. The repeating group (?:\(?\d{1,4}\)?[\s.\-]?){2,4} matches digit groups with optional parentheses and separators. Ends with 1–9 final digits.