Validate Phone Numbers Worldwide

Phone Number Validator API.

Validate phone numbers from 200+ countries. Returns validity status, formatted number, country, carrier information, and line type (mobile, landline, VoIP).

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Free tier, no card< 200ms responses99.9% uptime SLA

GET/v1/phonenumbervalidatorlive

query

Response200 OK · sample

{
  "status": "ok",
  "error": null,
  "data": {
    "country": "US",
    "detectedCountry": "US",
    "countryName": "United States",
    "countrycode": 1,
    "numberNational": 8165551017,
    "extension": null,
    "isvalid": true,
    "isMobile": true,
    "type": "fixed_line_or_mobile",
    "formatted": {
      "international": "+1 816-555-1017",
      "national": "(816) 555-1017",
      "rfc": "tel:+1-816-555-1017",
      "e164": "+18165551017"
    }
  }
}

Sample response · verify to run one live call, no signup

How it works

Phone Number Validator API

Validate phone numbers from 200+ countries. Returns validity status, formatted number, country, carrier information, and line type (mobile, landline, VoIP).

200+ countries and territories supported
Real-time validation with carrier lookup
Detects line type: mobile, landline, VoIP
Returns E.164 and national formats

1
Send one request
A single authenticated GET with the location you care about — no SDK required.
```
GET /v1/phonenumbervalidator?query=…
x-api-key: your_key
```
2
We do the aggregation
Each request pulls from multiple upstream sources and computes the derived fields for you.
3
Get clean JSON back
One structured object, typically under 200 ms — ready to render.
```
{ country, detectedCountry, countryName, … }
```

The response

Everything in a single call.

/v1/phonenumbervalidatorapplication/json

country"US"

detectedCountry"US"

countryName"United States"

countrycode1

numberNational8165551017

extension—

isvalidtrue

isMobiletrue

type"fixed_line_or_mobile"

formattedinternational, national, rfc, e164

Use cases

What developers build with it.

Real applications shipping on this endpoint today — each with the numbers that made it worth wiring up.

See every use case

User Registration Validation

Validate phone format and structure at registration time, before sending verification SMS.

Reduce SMS delivery failuresBlock obviously invalid numbers upfrontStandardize to E.164 for SMS APIs

200+countries supported

Instantvalidation

E.164format output

SMS Delivery Optimization

Validate and format all numbers before sending, filtering out landlines and invalid entries.

Maximize SMS delivery ratesAvoid wasting credits on undeliverable messagesFilter landlines from SMS campaigns

Filterlandlines from SMS

Reducefailed deliveries

SaveSMS credits

Start coding

Call it in your language.

Copy a working request, or install a typed SDK. Same endpoint, same key.

const res = await fetch("https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Included in your key

One subscription, the whole validate phone numbers worldwide stack.

Every related API ships with your key — no separate plans, no extra keys, one bill.

See pricing

8APIs in this bundle

99.9%uptime SLA

The bundle

phonenumbervalidatorYou’re herecallingcode countrylookup emailvalidator contactextractor humannameparser streetaddressparser genderdetector

No code required

Wire it into the tools you already run.

Ready-made recipes for Zapier, Make, and n8n — trigger on an event, and the data lands where your team works.

Google Sheets

Validate phone numbers in contact lists

WhenNew row added

ThenValidate number → update row with result

Slack

Alert on invalid phone signups

WhenNew user registered (via webhook)

ThenValidate number → post alert if invalid

Airtable

Build a verified phone database

WhenNew record created

ThenValidate number → populate verification fields

Notion

Validate CRM contact phone numbers

WhenNew database item created

ThenValidate number → update status property

Salesforce

Validate lead phone numbers on creation

WhenNew lead created

ThenValidate number → update custom field

GitHub

Validate contributor contact info

WhenNew issue opened

ThenValidate phone in issue body → add label

Browse all integrations

Learn

Understand the data behind the API.

Understanding Phone Number Formats

Learn about E.164, national formats, and international dialing standards.

Phone Line Types: Mobile, Landline, VoIP

Understanding different phone line types and their implications for your application.

Carrier Lookup and Its Uses

How carrier information helps with SMS routing, fraud detection, and cost optimization.

Questions about the API

How many countries are supported?

We support phone number validation for 200+ countries and territories worldwide, including all major regions.

What phone number formats can I submit?

Submit numbers in any format - with or without country code, spaces, dashes, or parentheses. We parse and validate automatically.

Can you detect if a number is mobile or landline?

Yes, we return line type information including mobile, landline, VoIP, toll-free, and premium rate classifications.

What is E.164 format?

E.164 is the international phone number standard (e.g., +14155551234). It's required by most SMS and calling APIs.

Is carrier information always available?

Carrier information is available for most mobile numbers. Some regions and number types may not have carrier data.

Does validation check if the number is actually in use?

We validate format and structure. To check if a number is actually reachable, you would need to send a verification SMS or call.

Start building with the Phone Number Validator API. Free tier, no card required — your key is live in minutes.

Get your free API key→Read the docs

Bonus: 300+ more APIs

The same key unlocks every other APIVerve endpoint — reach for them when you need them.

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