Real-Time Phone Verification API

Check phone numbers while users are still on your site. Data Checks uses live network signals to verify whether mobiles are active and recently reachable and landlines are live, with fast responses built for live forms.

Start with 200 free credits. No card required.

Accurate live results High reliability Fast response times Free implementation assistance

Why it matters

Accurate checks should not slow down your live forms.

On a live web form, every millisecond matters. Data Checks is built to verify telephone numbers quickly and dependably at capture, so you can protect your CRM and dialler data without holding up genuine users.

Competitive pricing

Get a very competitively priced telephone verification service, with 200 free credits so you can test real checks before buying.

Accurate telephone signals

Validate the format, identify mobile or landline numbers, and use live network signals to understand whether a mobile is active and recently reachable or a landline is live.

Built for reliability

Designed for dependable availability in the live lead flows your forms, CRMs, and sales teams rely on every day.

Superfast API response

Fast responses are essential for live forms. Data Checks is built to return telephone verification results quickly, so you can validate data in the flow without making users wait.

How it works

Get started in three steps.

1

Create a Data Checks account and get 200 free credits.

2

Generate an API key for your server or approved browser domains.

3

Send each phone number to the phone validation endpoint and use the result in your lead flow.

View Phone API Specs

Use cases

Made for practical data quality work.

  • Lead generation forms
  • Quote and booking journeys
  • CRM imports and automations
  • Call centre and dialler prep

Try it now

Try it now

Run a live phone validation check before you create an account. Enter a phone number and see the kind of result Data Checks returns in real time.

You can run up to 5 free checks from this page. Create a free account for 200 credits and full API access.

Pricing

Transparent validation credits

Very competitive pricing for a fast, accurate, dependable validation service your forms, CRM flows, and sales teams can rely on.

Start with 200 free credits, no card required. Test the service first, then top up only when you are ready. Credits do not expire.

Phone validation

Credits Per lookup
1,000 $0.0670
5,000 $0.0470
10,000 $0.0369
200,000 $0.0168

Implementation help

Free Implementation Assistance

Need technical help or implementation support? Our support team can guide you through every step of connecting your form to the Data Checks API. We can set it up for you free of charge.

Ask for Integration Help

Test fast, accurate phone validation for free.

Create an account, use your 200 free credits, and see the response speed and result quality before you top up.

Get Started