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27M+ API Requests Served

Validate Contacts
10x Faster

Seamless WhatsApp Number Checker, Caller ID, Phone Validation, GEO IP, Email Validation APIs and 200+ AI tools. Supports 180 countries.

180+
Countries
99.9%
Uptime
<200ms
Response
WhatsApp Verified
+91 98765 43210
99.7% Accuracy
Real-time validation
api-request.js
const response = await fetch(
  'https://lookup.proweblook.com/api/v1/wavalidation'
  + '?phone_number=%2B14155552671'
  + '&api_key=YOUR_API_KEY'
);
// ✓ Response in ~150ms

ProWebLook for ChatGPT

Verify contacts, research the web and audit AI visibility in ChatGPT.

Use in ChatGPT See what it can do

Contacts & lists

Email, phone and WhatsApp verification

Identity & reputation

Caller ID, IP, blacklist and spam signals

Web & social research

Google, public posts and website extraction

AI visibility

New audits, history, results and trends

Your existing ProWebLook account credits apply. Preview lists and confirm before running checks.

Trusted by developers & businesses worldwide

RapidAPI Postman
API Catalog

Powerful APIs for Every Need

From number validation to web scraping — one platform, limitless possibilities.

Most Popular

WhatsApp Number Validation API

Real-time verification of WhatsApp presence for any phone number. Confirm active accounts instantly with our cutting-edge validation engine across 180+ countries.

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Popular

Phone Number Lookup

Get carrier, line type, and location details for any phone number instantly.

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Caller ID API

Identify caller names and details for any phone number with reliable lookup.

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Email Verification

Verify email addresses in real time without sending a single email.

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GEO IP API

Geolocate any IP address worldwide with precise location data and ISP details.

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New suite

Social Media Scraper APIs

Search posts, extract profiles, and collect comments from the social channels your audience uses most.

X Scraper Reddit Scraper LinkedIn Scraper
New

MCP Server

Connect Claude, ChatGPT, Cursor and any AI agent to every ProWebLook API as native tools — one endpoint, your existing key.

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How It Works

Up & Running in 3 Minutes

No complex setup. No account moderation. Start validating numbers immediately.

1

Create Account

Sign up for free and get your API key instantly. No credit card required.

2

Integrate API

Copy-paste code snippets in any language. Works with REST, cURL, SDKs.

3

Start Validating

Send requests and get real-time results. Scale to millions of checks.

Developer Friendly

Built for Developers, by Developers

Extensively documented API with code samples in every major language. Postman collection included.

curl "https://lookup.proweblook.com/api/v1/phonevalidation?phone_number=%2B14155552671&api_key=YOUR_API_KEY"
{
  "status": "VALID_CONFIRMED",
  "formatted_number": "+1 415 555 2671",
  "linetype": "Mobile",
  "carrier": "T-Mobile",
  "countrycode": "US"
}
Free Developer Tools

Developer Tools That Never Leave Your Browser

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Markdown Previewer Studio

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Syntax Checker & Linter Studio

Check syntax in 60 language modes, with supported linting and fix previews.

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Code Diff Checker

Compare code and text side by side with syntax highlighting.

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E.164 Phone Number Formatter

Format single or bulk phone numbers into E.164, International and National formats.

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JSON to TypeScript, Zod, Python & Go

Convert JSON into TypeScript, Zod, Python Pydantic, Go structs and JSON Schema.

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SPF, DKIM & DMARC Inspector

Inspect and generate SPF, DMARC and DKIM DNS TXT authentication records.

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Browse all developer tools
27M+
API Requests Served
180+
Countries Supported
10K+
Active Developers
99.9%
Uptime SLA
Why ProWebLook

Everything You Need to Validate at Scale

Built for businesses of all sizes — from startups to enterprises.

Easy Integration

Simple REST API with code samples in every major language. Integrate into any CRM, CMS or software in minutes.

Flexible Pricing

Pay-as-you-go, packages, or subscriptions. Start free and scale based on your business needs.

24/7/365 Availability

Our infrastructure runs on globally distributed servers with 99.9% uptime guarantee.

Enterprise Security

Bank-grade encryption, GDPR compliant. Your data is secure with industry-standard protocols.

Lightning Fast

Average response time under 200ms. Optimized for high-volume batch processing.

Dedicated Support

Get help when you need it via WhatsApp, email, or documentation. Real humans, fast response.

Use Cases

What Teams Use ProWebLook For

Common ways stores, sales teams and developers use phone, WhatsApp, email and IP checks.

Stop Fake Cash-on-Delivery Orders

Check the phone number, its WhatsApp status and the buyer's IP country before you ship a COD order. The WordPress plugin does this on WooCommerce checkouts, and the Shopify integration covers Shopify stores.

Clean a Lead List Before Sales Calls

Run the numbers and emails from your forms or CRM through the phone number validator and email checker, and remove invalid numbers and disposable addresses. HubSpot, Zoho, Zapier, Make and n8n users can run the checks where they already work.

Check WhatsApp Before a Campaign

Find out which numbers have a WhatsApp account before you send, without saving them to a phone. Check one number with the free WhatsApp number checker, or a full list with the bulk WhatsApp validation API.

Flag Risky Sign-ups

Look up a new account's IP location and VPN, proxy or hosting flags with the IP geolocation API, and check its email domain or IP on the blacklist checker. Both checks also feed the order risk score in the Shopify and WordPress integrations.

Integrations

Works With Your Stack

Integrate seamlessly with the tools and languages you already use.

Python
Node.js
PHP
Java
JavaScript
cURL
Go
Ruby
C#
Postman
WordPress
Zapier
FAQ

Frequently Asked Questions

Simply create a free account to receive your API key instantly. No credit card is required. You can start making API calls right away using our documentation and Postman collection.
We offer Pay-As-You-Go, Package, and Subscription pricing models. You can pay through PayPal or Credit Card. Start with a free account that includes complimentary credits to test our APIs.
Our WhatsApp Number Checker API provides real-time verification with 99.7% accuracy. We directly verify WhatsApp presence status, ensuring you get the most up-to-date information.
Yes! We offer a Bulk WhatsApp Checker tool and our APIs support high-volume batch processing. You can validate thousands of numbers efficiently with our optimized infrastructure.
Our APIs support 180+ countries worldwide. Whether you need to validate numbers in the US, India, Brazil, UK, or anywhere else — we've got you covered with global coverage.
Free Credits Included

Get FREE Credits to Start Today

Discover an extensive array of API calls across all ProWebLook APIs. No credit card required — start building in minutes.

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