Phone validation regex

Question

I\'m using this pattern to check the validation of a phone number

^[0-9\\-\\+]{9,15}$

It\'s works for 0771234567 and +0

Answer 1

/^[0-9\+]{1,}[0-9\-]{3,15}$/

so first is a digit or a +, then some digits or -

Answer 2

I tried :

^(1[ \-\+]{0,3}|\+1[ -\+]{0,3}|\+1|\+)?((\(\+?1-[2-9][0-9]{1,2}\))|(\(\+?[2-8][0-9][0-9]\))|(\(\+?[1-9][0-9]\))|(\(\+?[17]\))|(\([2-9][2-9]\))|([ \-\.]{0,3}[0-9]{2,4}))?([ \-\.][0-9])?([ \-\.]{0,3}[0-9]{2,4}){2,3}$

I took care of special country codes like 1-97... as well. Here are the numbers I tested against (from Puneet Lamba and MCattle):

***** PASS *****
18005551234
1 800 555 1234
+1 800 555-1234
+86 800 555 1234
1-800-555-1234
1.800.555.1234
+1.800.555.1234
1 (800) 555-1234
(800)555-1234
(800) 555-1234
(800)5551234
800-555-1234
800.555.1234
(+230) 5 911 4450
123345678
(1) 345 654 67
+1 245436
1-976 33567
(1-734) 5465654
+(230) 2 345 6568
***** CORRECTLY FAILING *****
(003) 555-1212
(103) 555-1212
(911) 555-1212
1-800-555-1234p
800x555x1234
+1 800 555x1234
***** FALSE POSITIVES *****
180055512345
1 800 5555 1234
+867 800 555 1234
1 (800)  555-1234
86 800 555 1212

Originally posted here: Regular expression to match standard 10 digit phone number

Answer 3

I have a more generic regex to allow the user to enter only numbers, +, -, whitespace and (). It respects the parenthesis balance and there is always a number after a symbol.

^([+]?[\s0-9]+)?(\d{3}|[(]?[0-9]+[)])?([-]?[\s]?[0-9])+$

false, ""
false, "+48 504 203 260@@"
false, "+48.504.203.260"
false, "+55(123) 456-78-90-"
false, "+55(123) - 456-78-90"
false, "504.203.260"
false, " "
false, "-"
false, "()"
false, "() + ()"
false, "(21 7777"
false, "+48 (21)"
false, "+"
true , " 1"
true , "1"
true, "555-5555-555"
true, "+48 504 203 260"
true, "+48 (12) 504 203 260"
true, "+48 (12) 504-203-260"
true, "+48(12)504203260"
true, "+4812504203260"
true, "4812504203260

Answer 4

This solution actually validates the numbers and the format. For example: 123-456-7890 is a valid format but is NOT a valid US number and this answer bears that out where others here do not.

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If you do not want the extension capability remove the following including the parenthesis: (?:\s*(?:#|x.?|ext.?|extension)\s*(\d+)\s*)? :)

edit (addendum) I needed this in a client side only application so I converted it. Here it is for the javascript folks:

var myPhoneRegex = /(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]‌​)\s*)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)([2-9]1[02-9]‌​|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})\s*(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+)\s*)?$/i;
if (myPhoneRegex.test(phoneVar)) {
    // Successful match
} else {
    // Match attempt failed
}

hth. end edit

This allows extensions or not and works with .NET

(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]‌​)\s*)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)([2-9]1[02-9]‌​|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$

To validate with or without trailing spaces. Perhaps when using .NET validators and trimming server side use this slightly different regex:

(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]‌​)\s*)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)([2-9]1[02-9]‌​|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})\s*(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+)\s*)?$

All valid:

1 800 5551212

800 555 1212

8005551212

18005551212

+1800 555 1212 extension65432

800 5551212 ext3333

Invalid #s

234-911-5678

314-159-2653

123-234-5678

---

EDIT: Based on Felipe's comment I have updated this for international.

Based on what I could find out from here and here regarding valid global numbers

This is tested as a first line of defense of course. An overarching element of the international number is that it is no longer than 15 characters. I did not write a replace for all the non digits and sum the result. It should be done for completeness. Also, you may notice that I have not combined the North America regex with this one. The reason is that this international regex will match North American numbers, however, it will also accept known invalid # such as +1 234-911-5678. For more accurate results you should separate them as well.

Pauses and other dialing instruments are not mentioned and therefore invalid per E.164

\(?\+[0-9]{1,3}\)? ?-?[0-9]{1,3} ?-?[0-9]{3,5} ?-?[0-9]{4}( ?-?[0-9]{3})?

With 1-10 letter word for extension and 1-6 digit extension:

\(?\+[0-9]{1,3}\)? ?-?[0-9]{1,3} ?-?[0-9]{3,5} ?-?[0-9]{4}( ?-?[0-9]{3})? ?(\w{1,10}\s?\d{1,6})?

Valid International: Country name for ref its not a match.

+55 11 99999-5555 Brazil

+593 7 282-3889 Ecuador

(+44) 0848 9123 456 UK

+1 284 852 5500 BVI

+1 345 9490088 Grand Cayman

+32 2 702-9200 Belgium

+65 6511 9266 Asia Pacific

+86 21 2230 1000 Shanghai

+9124 4723300 India

+821012345678 South Korea

And for your extension pleasure

+55 11 99999-5555 ramal 123 Brazil

+55 11 99999-5555 foo786544 Brazil

Enjoy

Answer 5

  ^[0-9\-\+]{9,15}$ 

would match 0+0+0+0+0+0, or 000000000, etc.

  (\-?[0-9]){7}

would match a specific number of digits with optional hyphens in any position among them.

What is this +077 format supposed to be?

It's not a valid format. No country codes begin with 0.

The digits after the + should usually be a country code, 1 to 3 digits long.

Allowing for "+" then country code CC, then optional hyphen, then "0" plus two digits, then hyphens and digits for next seven digits, try:

  ^\+CC\-?0[1-9][0-9](\-?[0-9]){7}$

Oh, and {3,3} is redundant, simplifes to {3}.

Answer 6

Please refer to this SO Post

example of a regular expression in jquery for phone numbers

/\(?([0-9]{3})\)?([ .-]?)([0-9]{3})\2([0-9]{4})/

• (123) 456 7899
• (123).456.7899
• (123)-456-7899
• 123-456-7899
• 123 456 7899
• 1234567899

are supported