Landline Cleansing

Make sure you don't call dead or invalid numbers

Landline Verification removes dead and invalid numbers


The landline number validation service is ideal for call centres, list owners and data brokers. When you validate a number, you identify its present status and whether it is connected and contactable. The landline cleansing tool is the newest addition to our portal and is already in high demand. It ensures your list does not contain inactive numbers so you no longer have to bother trying to call them and get charged.

Choose landline number validation to save time and money

Data Soap’s landline cleansing service identifies the dead numbers from your telephone list. Before sending the list to your dialler, why don’t you try landline verification to make sure that all the numbers accept incoming calls? After you get your cleaned list back, you can expect higher contact rates and improved conversions. Using a landline number validation before starting to call customers will not only ease your staff’s job but will also boost their morale as their results are going to improve.

  • Identify if a landline is connected and contactable
  • Remove landlines that do not accept incoming calls
  • Remove all dead numbers before calling
  • Improve contact rate and increase conversions
  • Real-time API web form validation
  • Save money & time

How to use the landline cleansing tool?

Simply upload your files to our website and we will do the landline verification for you. Depending on the size of the batch, we can complete our checks in a couple of hours and we generally aim to return the cleaned lists within one working day.

A real-time API web form is on its way

We are working on our real-time landline solution at the moment, which will soon be available via our API. It can be integrated into your website to ensure that the telephone numbers you are collecting online are valid and live.


Please note that we perform landline cleansing on UK landline numbers only

Try our Landline validation service

Try our free demo and see how our Landline validation process works.

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Sign up today and get 100 Landline, 100 HLR, 100 Email and 100 TPS credits.

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Other cleansing, validation services we offer

TPS & CTPS Checker
For UK landlines or mobiles

Ensure your numbers aren't on the telephone preference service. Avoid a fine with our TPS checker and guarantee your numbers are legal to call.

Significantly reduce complaints with our DNC (Do Not Call) screen, included for free with our TPS checker service.

HLR Lookup
For all mobile numbers

Our HLR Check and Data Soap tool allows you to check if a mobile number is live, connected, switched on and what network it is assigned to.

Save your time and money by removing fake, incorrect or dead numbers from your marketing lists.

Email Verification
For any email address

Use our Email verification tool to remove emails that are incorrectly formatted or undeliverable. Identify ‘free’ emails such as Yahoo! and Gmail.

Email validation will also highlight ‘disposable’ addresses that will become inactive after a short period of time.