Keep in touch with your customers by validating or appending telephone numbers to your data

A telephone call is still one of the best ways of keeping in touch with your customers. ukc>connect Telephone Number Validation will help improve connection rates and reduce wasted resource by confirming that a phone number is valid before calling.

These services can also be used improve business and consumer data by appending an up to date landline and/or mobile (consumer only) number to contact records.

Choose to authenticate telephone numbers, in real time, as the number is entered onto your website, CRM etc, or schedule updates to automatically verify and enrich larger volumes of data.

Our telephone number APIs help to:

  • Improve telemarketing campaign effectiveness through increased connectivity
  • Eliminate costs associated with contacting wrong numbers
  • Check that a telephone number is valid before it enters your database
  • Enhance customer records by adding telephone numbers

ukc>connect Telephone Number services include:

  • Mapper – check the structure and length of existing telephone numbers to ensure accuracy and add or update STD codes against postcode data.
  • Surecall - confirm connectivity of landline and mobile telephone numbers in real time and highlight invalid records for further research.
  • Telenumbering - add telephone numbers and ex-directory flags to customer and prospect lists, using BT's Directory Enquiries database and additional datasets of consented 3rd party information. Options available:
    • Consumer Telenumbering – append residential landlines numbers and ex-directory flags.
    • Mobile Telenumbering – add mobile telephone numbers to consumer records.
    • Business Telenumbering – append business numbers to company information.

Try it now

Consumer Telenumbering

Enter a name and address to be processed in the input fields below.
Press return or click the 'Test' button to submit the search.

You have 50 trial searches available


Enter a landline telephone number to be checked in the input field below.
Press return or click the 'Test' button to submit the search.

You have 50 trial searches available

ukc>connect is our automated Data as a Service (DaaS) API platform. Seamlessly integrating into any system to validate, clean and enhance data on demand.

Key Benefits

Fast Sign Up Process - simply register online and you’ll be ready to go. Our services are available on account or by credit card

Single Record or Batch Searches - ukc>connect can be used for a single or batch look up

Quick and Easy Integration - available as REST and SOAP versions with example code and a comprehensive Developer's toolkit

Instant Results - results are available to view immediately

Secure - all data transactions are undertaken on a 256-bit SSL encrypted link

Fully Supported - Our team of experts are here to help

GDPR Compliance - Provides a full audit trail, helping to evidence GDPR compliance

All data offered by ukchanges is 100% GDPR compliant