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ProWebLook API

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What is ProWebLook?

ProWebLook is a powerful, developer-friendly REST API platform that provides real-time data enrichment for phone numbers and network assets. Built for reliability and speed, it gives you:

Phone Validation

Validate, format, and enrich phone numbers with carrier, location, line type, and timezone data.

WhatsApp Validation

Check if a phone number is registered on WhatsApp and whether it’s a business account.

Batch WhatsApp Validation

Submit up to 1,000 phone numbers at once for asynchronous WhatsApp validation with polling.

Caller ID Lookup

Reverse-lookup a phone number to retrieve the registered caller name.

Blacklist Checker

Check IPs, domains, and URLs against major global blacklists and spam databases.

Balance

Check your remaining API credits for any service programmatically.

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Base URL

All API requests are made to: 
https://lookup.proweblook.com/api/v1

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Rate Limits

Each API key is subject to per-service credit limits. When your balance reaches zero, requests will return a 402 Payment Required error. Check your balance anytime using the Balance API.

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Quick Start

1

Get your API Key

Sign up at proweblook.com and navigate to your dashboard to find your API key.
2

Make your first call

Use the Phone Validation endpoint to validate a number:
curl "https://lookup.proweblook.com/api/v1/phonevalidation?phone_number=%2B14155552671&api_key=YOUR_API_KEY"
3

Explore the APIs

Browse the API Reference to explore all available endpoints and their responses.