M
API Matrix

Numverify API

⭐ Beginner's Pick Phone / API Key Intermediate HTTPS
Varies by plan (check documentation)
72 Score
Grade B
Visit Official Site Compare Alternatives

Overview

Numverify is a phone number validation API that checks whether a phone number is valid and returns carrier, location, and line type information for numbers from over 200 countries. It is easy to use — just append a phone number and your API key to the endpoint URL. Numverify is widely used in signup forms to reduce fake registrations.

💡

Beginner Tip

Always include the country code with the phone number (e.g., 14158586273 for a US number) to get accurate validation results.

Available Data

phone number validation
carrier information
country code
line type
Use case: Integrate phone number validation data into web and mobile applications

Example Response

JSON Response 
{
  "input": "[email protected]",
  "is_valid": true,
  "format_valid": true,
  "details": "Input passes all validation checks"
}

Field Reference

valid Whether the phone number is a valid, dialable number.
number The phone number in international E.164 format.
country_code ISO 2-letter country code where the number is registered.
carrier The name of the telecom carrier associated with the phone number.
line_type The type of phone line: mobile, landline, or special_services.

Implementation Example 

const url = "https://numverify.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

{"success":false,"error":{"code":101}} The API key is invalid or missing.
✓ Sign up at numverify.com to get a free API key and include it as the access_key parameter.
Invalid number result for a valid phone number The phone number was provided without the country dialing code.
✓ Always include the full international number (e.g., 14158586273 not 4158586273 for the US).
HTTP instead of HTTPS on free plan The free Numverify plan only supports HTTP requests, not HTTPS.
✓ Use http:// for free tier requests, or upgrade to a paid plan to use https://.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 12/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS UNKNOWN
Category Phone
Difficulty Intermediate
Verified: 2026-04-04

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