Phone number validator
Check whether a phone number has the right shape. With a leading + and country code, it finds the country and checks the digit count.
Input
Phone number check
—Enter a phone number (ideally with its + country code) to check its structure.
+ and country code, this matches the dialing code and national-number length to a country. Without one, it checks the digit count against known national formats. It's a structural check, not a live lookup, so it can't confirm the number is in service.- Standard
- E.164
- Check
- Structure
Related tools
This phone number validator checks the shape of a number. It can't tell you whether anyone answers it. Type a number with its + and country code and the tool matches the dialing code, then checks that the national part has the right number of digits. It knows 15 countries, the same set as the phone number generator, and the number you type stays in your browser.
How to validate a phone number
- Type or paste the number, ideally with + and the country code (+1 415 555 0132).
- Spaces, dashes, brackets, and other punctuation are ignored.
- The result updates as you type: valid with the matched country and expected length, or invalid with the reason.
- +1 is shared by the US and Canada, so a +1 number shows two possible regions.
E.164 and national number length validation
E.164 is the ITU-T numbering standard: a + sign, a country code of one to three digits, and no more than 15 digits in total. The validator first rejects anything shorter than 6 or longer than 15 digits. With a +, it finds the dialing code and compares the rest with that country's national length, such as 10 digits for the US or 9 for France. Without a +, all it can say is whether the digit count is 9, 10, or 11, the lengths its 15 countries use.
What phone number validation cannot confirm
- Whether the number is assigned to anyone.
- Whether it's active or in service.
- Whether it's mobile, landline, VoIP, or toll-free.
- Which carrier or area it belongs to. That needs a live lookup service.
Frequently asked questions
What does phone number validation check?
The digit count and, when you include a +, the dialing code and that country's national length. It doesn't confirm that the number is active or assigned to anyone.
Why should I include the + country code?
Without it the tool doesn't know the country, so it can only say the length looks like one of the formats it knows. With +CC it names the country and checks that country's exact length.
Does this tool support all countries?
No. It covers 15: the US, Canada, the UK, Germany, France, India, Australia, Brazil, Japan, Spain, Italy, Mexico, the Netherlands, South Africa, and Nigeria. A number from anywhere else comes back as an unrecognized dialing code, even if it's a valid number there.
Is the phone number I enter stored anywhere?
No. The check runs in your browser, and the number you type isn't sent to a server.
Built and maintained by Bipul Kumar. Found a wrong number or a broken result? Tell me and I'll fix it.