Phone & Mobile Validation

Accurate phone number data allows your organisation to maintain contact and relationships with customers. If the phone numbers in your database have errors, communications will fail.

GDPR Compliant
AFD’s GDPR-compliant phone verification solution validates UK landline, UK mobile and International telephone numbers to ensure the number entered is formatted correctly and has the right number of digits.

Full Confidence
In addition to checking the format and number of digits, AFD’s phone validation also checks the number is “live”, giving you full confidence in the accuracy of your phone number data.

South and City College Birmingham Logo

When contacting students, we found multiple instances where the email addresses and phone numbers provided were wrong. Each student studying at the college provides us with £5,000 per annum of vital funding, whilst students over 18 provide £2,000. Preventing one or two students from slipping through the net, because they would otherwise miss a key communication and fail to enrol, more than covers the cost of email verification and phone verification from AFD.

Paul Brownlow

Systems Development Manager at South & City College Birmingham

Try It

Using the form below, verify phone number data by entering a landline or mobile number and our service will confirm if it’s a valid phone number, or if it’s invalid.


Phone & Mobile


Easy to Integrate

AFD’s phone validation API can be flexibly deployed in a host of environments.
Plug-ins for popular platforms such as Magento, Shopify, Salesforce, D365 and AFD Robot provide a range of developer-free integrations.
Visit our Developer Area using the button below to find out more about our phone verification API.

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We are here to help

We serve thousands of organisations and a network of hundreds of partners across multiple industry sectors, enabling them to have full confidence in their contact data.