Phone Number Validator API GET

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.

Try it — live request, no key required

Request

GETapi.apiverve.com/v1/phonenumbervalidator

Verification

Format

No key required to try it. Get a key to use it in your app.

200 OK

{
  "status": "ok",
  "error": null,
  "data": {
    // Phone Number Validator response payload
  }
}

About the Phone Number Validator API

Phone Number Validator works by validating the phone number format and the country code to ensure that the phone number is valid. It uses predefined rules and algorithms to validate the phone number, then returns the validation result.

What people use it for

User Registration: Use the Phone Number Validator API to validate phone numbers for user registration. Use the data to verify user information and prevent fake accounts
Contact Verification: Verify contacts by using the Phone Number Validator API to validate phone numbers. Use the data to ensure accurate contact information and improve communication
Lead Generation: Generate leads by using the Phone Number Validator API to validate phone numbers. Use the data to qualify leads, improve data quality, and increase conversion rates
Fraud Prevention: Prevent fraud by using the Phone Number Validator API to validate phone numbers. Use the data to detect suspicious activities, verify identities, and protect against scams

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON: Default REST response
XML: Markup format
YAML: Human-readable
CSV: Tabular export
GraphQL: Query language
MCP: For AI agents

View all integrations →

Other ways to use Phone Number Validator

Same data, same APIVerve account, same credit balance — one key works on all of them.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.on VerveSheets Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.on VerveContext

Questions.

Common questions about the Phone Number Validator API.

Read the docs →

What does the Phone Number Validator API do?

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.

How do I authenticate Phone Number Validator API requests?

Pass your API key in the x-api-key header over HTTPS. One key works across all 300+ APIVerve APIs — there are no per-endpoint credentials.

How much does the Phone Number Validator API cost?

Each call spends 10 credits from your shared pool. The free tier includes 200 credits every month, and paid plans add more headroom.

How fast is the Phone Number Validator API?

Response time depends on the endpoint — the p50 through p99 latency for this API is published on this page. Requests are served over HTTPS through a global edge network.

What response formats does the Phone Number Validator API support?

JSON by default, plus XML and YAML via the format parameter. GraphQL and an MCP interface for AI agents are available across the catalog.

What HTTP method does the Phone Number Validator API use?

GET over HTTPS, following standard REST conventions with a consistent { status, error, data } response envelope.

Request parameters — GET /v1/phonenumbervalidator

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Required

Parameter	Type	Example	Description
`number`Required	string	`816-555-1017`	The phone number to validate
`country`Required	string	`us`	The country code of the phone number (e.g., us, uk) length 2-2

Example request

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curl "https://api.apiverve.com/v1/phonenumbervalidator?number=816-555-1017&country=us" \
  -H "x-api-key: YOUR_API_KEY"

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Header	When	Value
`x-api-key`Required	Every request	Your API key. Header names are case-insensitive, so `X-API-Key` is the same header.
`Authorization`Alternate	Instead of the above	`Bearer <key>` — for clients that only expose bearer auth. Resolves to the same account and the same billing.

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Response — GET /v1/phonenumbervalidator

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

Sample response

{
  "status": "ok",
  "error": null,
  "data": {
    "country": "US",
    "detectedCountry": "US",
    "countryName": "United States",
    "countrycode": 1,
    "numberNational": 8165551017,
    "extension": null,
    "isValid": true,
    "isMobile": true,
    "isVoip": false,
    "isDisposable": false,
    "type": "fixed_line_or_mobile",
    "formatted": {
      "international": "+1 816-555-1017",
      "national": "(816) 555-1017",
      "rfc": "tel:+1-816-555-1017",
      "e164": "+18165551017"
    },
    "riskScore": 0,
    "riskLevel": "low"
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`country`	string	`"US"`	The country code that was supplied with the request
`detectedCountry`	string	`"US"`	The ISO country code detected from the number
`countryName`	string	`"United States"`	Full name of the detected country
`countrycode`	number	`1`	The international dialing/country calling code
`numberNational`	number	`8165551017`	The national (significant) number without the country code
`extension`	object	`null`	The phone extension if present, otherwise null
`isValid`	boolean	`true`	Whether the number is valid for the given country/region
`isMobile`	boolean	`true`	Whether the number is a mobile phone
`isVoip`	boolean	`false`	Whether the number is a VOIP line (common in fraud)
`isDisposable`	boolean	`false`	Whether the number is a known disposable/virtual number
`type`	string	`"fixed_line_or_mobile"`	Line type: fixed_line, mobile, fixed_line_or_mobile, toll_free, premium_rate, shared_cost, voip, personal_number, pager, uan, or unknown
`formatted`	object	`{...}`
`international`	string	`"+1 816-555-1017"`	The number in international format
`national`	string	`"(816) 555-1017"`	The number in national format
`rfc`	string	`"tel:+1-816-555-1017"`	The number in RFC3966 format
`e164`	string	`"+18165551017"`	The number in E.164 format
`riskScore`Premium	number	`0`	Composite 0-100 risk score combining validity, disposable, VOIP and line-type signals (higher is riskier)
`riskLevel`Premium	string	`"low"`	Risk band derived from the score: low, medium or high

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Header	What it carries
`x-api-remaining-credits`	Credits left in the current cycle
`x-api-credits-used`	Credits spent in the current cycle
`x-api-max-credits`	The allowance for the cycle
`x-api-version`	Version of the endpoint that answered

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter that has to change.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted here	A key restriction or an IP allow-list — never a bad key.
`429`	Rate limited, or out of credits	Read `error` to tell them apart, then back off or top up.

What a call costs — 10 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Plan	Per month	Credits	Phone Number Validator calls	Per 1,000 calls
Free	Free	200	20	Free
Starter	$29.99	200,000	20,000	$1.50
Pro	$99.99	1,000,000	100,000	$1.00
Mega	$299.99	4,000,000	400,000	$0.75

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Compare all pricing tiers →

Call it from cURL — GET /v1/phonenumbervalidator

No SDK to install — this is a plain HTTPS call to /v1/phonenumbervalidator with your key in the x-api-key header. Swap in a real key and it runs as-is.

cURL

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curl "https://api.apiverve.com/v1/phonenumbervalidator" \
  -H "x-api-key: YOUR_API_KEY"

Resources

GitHubapiverve/phonenumbervalidator-apiSource, issues and the examples this page is built from.ReferencePhone Number Validator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/phonenumbervalidatornpm apiverve-phonenumbervalidatorPyPI APIVerve.API.PhoneNumberValidatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Node.js — GET /v1/phonenumbervalidator

Install the Node.js SDK, then call the Phone Number Validator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — npm

npm install @apiverve/phonenumbervalidator

Node.js

const res = await fetch("https://api.apiverve.com/v1/phonenumbervalidator", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Resources

npm@apiverve/phonenumbervalidatorThe published Node.js client, versioned and signed.GitHubapiverve/phonenumbervalidator-apiSource, issues and the examples this page is built from.ReferencePhone Number Validator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

apiverve-phonenumbervalidatorPyPI APIVerve.API.PhoneNumberValidatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Python — GET /v1/phonenumbervalidator

Install the Python SDK, then call the Phone Number Validator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — PyPI

pip install apiverve-phonenumbervalidator

Python

import requests

res = requests.get(
    "https://api.apiverve.com/v1/phonenumbervalidator",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

PyPIapiverve-phonenumbervalidatorThe published Python client, versioned and signed.GitHubapiverve/phonenumbervalidator-apiSource, issues and the examples this page is built from.ReferencePhone Number Validator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/phonenumbervalidatornpm APIVerve.API.PhoneNumberValidatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from C# / .NET — GET /v1/phonenumbervalidator

Install the C# / .NET SDK, then call the Phone Number Validator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — NuGet

dotnet add package APIVerve.API.PhoneNumberValidator

C# / .NET

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var json = await client.GetStringAsync("https://api.apiverve.com/v1/phonenumbervalidator");
Console.WriteLine(json);

Resources

NuGetAPIVerve.API.PhoneNumberValidatorThe published C# / .NET client, versioned and signed.GitHubapiverve/phonenumbervalidator-apiSource, issues and the examples this page is built from.ReferencePhone Number Validator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/phonenumbervalidatornpm apiverve-phonenumbervalidatorPyPI

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Go — GET /v1/phonenumbervalidator

No SDK to install — this is a plain HTTPS call to /v1/phonenumbervalidator with your key in the x-api-key header. Swap in a real key and it runs as-is.

req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/phonenumbervalidator", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")

res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Resources

Also published for

@apiverve/phonenumbervalidatornpm apiverve-phonenumbervalidatorPyPI APIVerve.API.PhoneNumberValidatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from PHP — GET /v1/phonenumbervalidator

No SDK to install — this is a plain HTTPS call to /v1/phonenumbervalidator with your key in the x-api-key header. Swap in a real key and it runs as-is.

PHP

$ch = curl_init("https://api.apiverve.com/v1/phonenumbervalidator");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);

$response = curl_exec($ch);
echo $response;

Resources

Also published for

@apiverve/phonenumbervalidatornpm apiverve-phonenumbervalidatorPyPI APIVerve.API.PhoneNumberValidatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Ruby — GET /v1/phonenumbervalidator

No SDK to install — this is a plain HTTPS call to /v1/phonenumbervalidator with your key in the x-api-key header. Swap in a real key and it runs as-is.

Ruby

require "net/http"

uri = URI("https://api.apiverve.com/v1/phonenumbervalidator")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.body

Resources

Also published for

@apiverve/phonenumbervalidatornpm apiverve-phonenumbervalidatorPyPI APIVerve.API.PhoneNumberValidatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

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Phone Number Validator API GET

Try it — live request, no key required

About the Phone Number Validator API

What people use it for

Ways to call it

Other ways to use Phone Number Validator

Questions.

Request parameters — GET /v1/phonenumbervalidator

Required

Authentication

Response — GET /v1/phonenumbervalidator

Response fields

Response headers

Errors

What a call costs — 10 credits per call

Call it from cURL — GET /v1/phonenumbervalidator

Resources

Also published for

Call it from Node.js — GET /v1/phonenumbervalidator

Resources

Also published for

Call it from Python — GET /v1/phonenumbervalidator

Resources

Also published for

Call it from C# / .NET — GET /v1/phonenumbervalidator

Resources

Also published for

Call it from Go — GET /v1/phonenumbervalidator

Resources

Also published for

Call it from PHP — GET /v1/phonenumbervalidator

Resources

Also published for

Call it from Ruby — GET /v1/phonenumbervalidator

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Phone Number Validator API

Data Validation

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