Phone Number Validator API
Phone Number Validator is a simple tool for validating if a phone number is valid or not. It checks the phone number format and the country code to see if the phone number is valid.
The Phone Number Validator API provides reliable and fast access to phone number validator data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.
To use Phone Number Validator, you need an API key. You can get one by creating a free account and visiting your dashboard.
GET Endpoint
https://api.apiverve.com/v1/phonenumbervalidatorCode Examples
Here are examples of how to call the Phone Number Validator API in different programming languages:
curl -X GET \
"https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us" \
-H "X-API-Key: your_api_key_here"const response = await fetch('https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us', {
method: 'GET',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
});
const data = await response.json();
console.log(data);import requests
headers = {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
response = requests.get('https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us', headers=headers)
data = response.json()
print(data)const https = require('https');
const url = require('url');
const options = {
method: 'GET',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
};
const req = https.request('https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us', options, (res) => {
let data = '';
res.on('data', (chunk) => data += chunk);
res.on('end', () => console.log(JSON.parse(data)));
});
req.end();<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
'X-API-Key: your_api_key_here',
'Content-Type: application/json'
]);
$response = curl_exec($ch);
curl_close($ch);
$data = json_decode($response, true);
print_r($data);
?>package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us", nil)
req.Header.Set("X-API-Key", "your_api_key_here")
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}require 'net/http'
require 'json'
uri = URI('https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
request = Net::HTTP::Get.new(uri)
request['X-API-Key'] = 'your_api_key_here'
request['Content-Type'] = 'application/json'
response = http.request(request)
puts JSON.pretty_generate(JSON.parse(response.body))using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main(string[] args)
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Add("X-API-Key", "your_api_key_here");
var response = await client.GetAsync("https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us");
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}Authentication
The Phone Number Validator API requires authentication via API key. Include your API key in the request header:
X-API-Key: your_api_key_hereInteractive API Playground
Test the Phone Number Validator API directly in your browser with live requests and responses.
Parameters
The following parameters are available for the Phone Number Validator API:
Validate Phone Number
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
number | string | required | The phone number to validate | - | |
country | string | required | The country code of the phone number (e.g., us, uk) Length: 2 - 2 chars | - |
Response
The Phone Number Validator API returns responses in JSON, XML, YAML, and CSV formats:
Example Responses
{
"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"
}
}
}<?xml version="1.0" encoding="UTF-8"?>
<response>
<status>ok</status>
<error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
<data>
<country>US</country>
<detectedCountry>US</detectedCountry>
<countryName>United States</countryName>
<countrycode>1</countrycode>
<numberNational>8165551017</numberNational>
<extension xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
<isvalid>true</isvalid>
<isMobile>true</isMobile>
<type>fixed_line_or_mobile</type>
<formatted>
<international>+1 816-555-1017</international>
<national>(816) 555-1017</national>
<rfc>tel:+1-816-555-1017</rfc>
<e164>+18165551017</e164>
</formatted>
</data>
</response>
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'
| key | value |
|---|---|
| country | US |
| detectedCountry | US |
| countryName | United States |
| countrycode | 1 |
| numberNational | 8165551017 |
| extension | |
| 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} |
Response Structure
All API responses follow a consistent structure with the following fields:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains the API response data if successful, otherwise null | {...} |
Learn more about response formats →
Response Data Fields
When the request is successful, the data object contains the following fields:
| Field | Type | Sample Value | Description |
|---|---|---|---|
country | string | - | |
detectedCountry | string | - | |
countryName | string | Full name of the detected country | |
countrycode | number | - | |
numberNational | number | - | |
extension | object | - | |
isvalid | boolean | - | |
isMobile | boolean | Whether the number is a mobile phone | |
type | string | - | |
formatted | object | - | |
â”” international | string | - | |
â”” national | string | - | |
â”” rfc | string | - | |
â”” e164 | string | - |
Headers
Required and optional headers for Phone Number Validator API requests:
| Header Name | Required | Example Value | Description |
|---|---|---|---|
X-API-Key | required | your_api_key_here | Your APIVerve API key. Found in your dashboard under API Keys. |
Accept | optional | application/json | Specify response format: application/json (default), application/xml, or application/yaml |
User-Agent | optional | MyApp/1.0 | Identifies your application for analytics and debugging purposes |
X-Request-ID | optional | req_123456789 | Custom request identifier for tracking and debugging requests |
Cache-Control | optional | no-cache | Control caching behavior for the request and response |
GraphQL AccessALPHA
Access Phone Number Validator through GraphQL to combine it with other API calls in a single request. Query only the phone number validator data you need with precise field selection, and orchestrate complex data fetching workflows.
Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.
POST https://api.apiverve.com/v1/graphqlquery {
phonenumbervalidator(
input: {
number: "816-555-1017"
country: "us"
}
) {
country
detectedCountry
countryName
countrycode
numberNational
extension
isvalid
isMobile
type
formatted {
international
national
rfc
e164
}
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The Phone Number Validator API supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Phone Number Validator directly from browser-based applications without proxy servers.
| CORS Header | Value | Description |
|---|---|---|
Access-Control-Allow-Origin | * | Accepts requests from any origin |
Access-Control-Allow-Methods | * | Accepts any HTTP method |
Access-Control-Allow-Headers | * | Accepts any request headers |
Browser Usage: You can call Phone Number Validator directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.
Rate Limiting
Phone Number Validator API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Phone Number Validator users.
| Plan | Rate Limit | Description |
|---|---|---|
| Free | 5 requests/min | Hard rate limit enforced - exceeding will return 429 errors |
| Starter | No Limit | Production ready - standard traffic priority |
| Pro | No Limit | Production ready - preferred traffic priority |
| Mega | No Limit | Production ready - highest traffic priority |
Learn more about rate limiting →
Rate Limit Headers
When rate limits apply, each Phone Number Validator response includes headers to help you track your usage:
| Header | Description |
|---|---|
X-RateLimit-Limit | Maximum number of requests allowed per time window |
X-RateLimit-Remaining | Number of requests remaining in the current window |
X-RateLimit-Reset | Unix timestamp when the rate limit window resets |
Handling Rate Limits
Free Plan: When you exceed your rate limit, Phone Number Validator returns a 429 Too Many Requests status code. Your application should implement appropriate backoff logic to handle this gracefully.
Paid Plans: No rate limiting or throttling applied. All paid plans (Starter, Pro, Mega) are production-ready.
Best Practices for Phone Number Validator:
- Monitor the rate limit headers to track your Phone Number Validator usage (Free plan only)
- Cache phone number validator responses where appropriate to reduce API calls
- Upgrade to Pro or Mega for guaranteed no-throttle Phone Number Validator performance
Note: Phone Number Validator rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Phone Number Validator on Free tier.
Error Codes
The Phone Number Validator API uses standard HTTP status codes to indicate success or failure:
| Code | Message | Description | Solution |
|---|---|---|---|
200 | OK | Request successful, data returned | No action needed - request was successful |
400 | Bad Request | Invalid request parameters or malformed request | Check required parameters and ensure values match expected formats |
401 | Unauthorized | Missing or invalid API key | Include x-api-key header with valid API key from dashboard |
403 | Forbidden | API key lacks permission or insufficient credits | Check credit balance in dashboard or upgrade plan |
429 | Too Many Requests | Rate limit exceeded (Free: 5 req/min) | Implement request throttling or upgrade to paid plan |
500 | Internal Server Error | Server error occurred | Retry request after a few seconds, contact support if persists |
503 | Service Unavailable | API temporarily unavailable | Wait and retry, check status page for maintenance updates |
Learn more about error handling →
Need help? Contact support with your X-Request-ID for assistance.
Integrate Phone Number Validator with SDKs
Get started quickly with official Phone Number Validator SDKs for your preferred language. Each library handles authentication, request formatting, and error handling automatically.
Available for Node.js, Python, C#/.NET, and Android/Java. All SDKs are open source and regularly updated.
Integrate Phone Number Validator with No-Code API Tools
Connect the Phone Number Validator API to your favorite automation platform without writing code. Build workflows that leverage phone number validator data across thousands of apps.





All platforms use your same API key to access Phone Number Validator. Visit our integrations hub for step-by-step setup guides.
Frequently Asked Questions
How do I get an API key for Phone Number Validator?
How many credits does Phone Number Validator cost?
Each successful Phone Number Validator API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful phone number validator lookups.
Can I use Phone Number Validator in production?
The free plan is for testing and development only. For production use of Phone Number Validator, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.
Can I use Phone Number Validator from a browser?
What happens if I exceed my Phone Number Validator credit limit?
When you reach your monthly credit limit, Phone Number Validator API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.



