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Data validation, fraud & verification - decoded.

Engineering notes, compliance explainers, and the ROI maths behind clean data. Written for the people building on the API.

Latest

Phone validation

What is MNP lookup and why does it matter for UK call centres?

MNP lookup tells you which network a UK mobile number is on today, not the one it was issued to. Here is what it checks, how it differs from HLR, and why diallers need it.

Aug 2026 · 6 min
Phone validation

How Can I Tell If a Phone Number Is Real?

Tired of wasting budget on fake leads and undelivered SMS messages? Discover 5 reliable ways to check if a phone number is real—from instant HLR lookup validation to quick manual checks—so you can keep your database clean and active.

Aug 2026 · 5 min
CompliancePhone validation

How to check UK phone numbers against TPS and CTPS before a calling campaign

A plain-English guide to screening a UK calling list against the TPS and CTPS registers before you dial, including bulk upload, API checks, and how often to re-screen.

Aug 2026 · 8 min
Data cleansingCompliance

How to clean and validate a UK customer database for GDPR accuracy

A step-by-step guide to cleaning and validating a UK customer database for GDPR accuracy: phone, email and address validation plus TPS, CTPS and MPS checks.

Aug 2026 · 9 min
Compliance

GDPR Article 5 and data accuracy: what it actually means for your CRM

GDPR Article 5 requires personal data to be accurate and kept up to date. Here's what that means for your CRM - in plain English - and how to fix it.

May 2026 · 7 min
Data cleansing

How to Clean Data: Step-by-Step for Marketing and Sales Teams

A practical step-by-step guide to cleaning data for marketing and sales teams, from identifying bad records to ongoing monitoring.

Apr 2026 · 2 min
Data cleansing

What Is Data Cleaning? A Plain-English Guide

A plain-English guide to data cleaning, why it matters, and how regular data cleaning improves performance and decision-making.

Apr 2026 · 2 min
Email

How to Check If an Email Address Is Valid (Without Sending an Email)

Learn safer ways to check whether an email address is valid without sending a message and risking deliverability.

Mar 2026 · 2 min
Email

How to Check If an Email Address Is Valid (Without Sending an Email)

If you want to check an email address is valid without sending a message, there are safer and more reliable ways to do it.

Feb 2026 · 2 min
Phone validation

How to Check if a Phone Number is Real and Active (UK & International Guide)

Learn how to check if a phone number is still active or real, with a focus on UK numbers and tips that apply internationally. Verify leads and improve campaign results.

Feb 2026 · 9 min
Data cleansing

How to Efficiently Validate Lead Generation Data Right Now!

Inaccurate lead data hurts sales & marketing ROI. Here, discover how to validate lead generation data for improved lead quality.

Jun 2024 · 3 min
Email

How to Improve Email Deliverability with Quick Validation

Discover how to improve email deliverability, avoid spam complaints, and reach engaged subscribers without sending test emails.

May 2024 · 3 min
SMS

Everything You Need to Know About SMS Sender ID

The right SMS sender ID can make for a successful marketing campaign. The wrong one can get you blocked & considered spam. Here’s everything you need to know!

Dec 2023 · 4 min
Compliance

Are You Exposing Yourself to Cybercrime?

Everyone has heard the word cybercrime but as with most things of this nature, you never think it will happen to you. Here's how to protect yourself.

Jun 2023 · 4 min
Phone validation

Calls Convert Better Than Any Other Lead Source - So Check Your Numbers!

Research shows that calls convert better, when it comes to leads. So make sure the numbers you have are valid and legal to call with our data look-up service.

Apr 2023 · 5 min
Compliance

Digital Marketing Regulations - The Quick & Easy (Non-Boring) How to Guide You Really Need!

Digital marketing regulations & compliance can be confusing, to say the least. So we’ve broken down the acronyms & laid out the rules so you can check to see if you’re compliant.

Mar 2023 · 5 min
SMS

Optimise Your SMS Marketing Campaign with HLR Lookup

SMS marketing is quickly becoming one of the most popular ways of communicating with customers.

Feb 2023 · 3 min
SMS

Benefits of Sending Bulk SMS to Customers

Send SMS campaigns to thousands of people simultaneously and see results regardless of your company size and budget.

Jan 2023 · 1 min
Company news

DataIQ Awards 2022

The Data Soap team was honoured to be nominated for the “Data Enabling Solution of the Year” award.

Oct 2022 · 1 min
Phone validation

How to Check If a Phone Number Is Real, Active, and Still in Use (Without Calling It)

Being able to check if a phone number is still active without calling it is a core data quality skill, especially for UK businesses working at scale.

Nov 2021 · 3 min
Compliance

Avoid Fines on Your Next Sales and Marketing Calls

Before you carry out market research to launch any telemarketing campaigns, you need to be confident in the knowledge that the numbers you are going to be calling are happy to be contacted

Nov 2021 · 3 min
Phone validation

A guide to HLR Lookup

Everything you need to know about HLR, mobile verification and mobile validation.

Jun 2020 · 9 min
Data cleansing

Data Soap - Quick and easy data cleaning

Data Soap allows you to validate UK and international mobile numbers, UK landline numbers and email addresses in real-time.

Dec 2018 · 1 min
Company news

Video: One month of Data Soap

See how Data Soap performed in November.

Dec 2018 · 1 min
Data cleansing

Effective direct mail marketing in a digital age

This article considers how you can effectively market your services through the post. It will be helpful for direct marketers, even if you don’t currently use mail marketing campaigns.

Nov 2018 · 1 min
Data cleansing

Effective direct mail marketing in a digital age

This article considers how you can effectively market your services through the post. It will be helpful for direct marketers, even if you don’t currently use mail marketing campaigns.

Nov 2018 · 3 min
Compliance

TPS vs Opt-in – what you need to know

Now that GDPR has hit and is in full swing your marketing data is now more valuable than ever. Whilst being able to contact someone not on the TPS can still be done using legitimate interest.

Jul 2018 · 1 min
Compliance

Why you need to clean your data to be GDPR compliant

Article 5 of the GDPR requires that personal data shall be: accurate and, where necessary, kept up to date; every reasonable step must be taken to ensure that personal data that are inaccurate...

Apr 2018 · 2 min
Data cleansing

New Year Checklist with hints and tips!

The Christmas break allows time to reflect on where you are compared to this time last year.

Dec 2017 · 4 min
Compliance

What is the future of the TPS with GDPR and ePrivacy?

Currently (December 2017) all data handling in the UK is governed by the Data Protection Act 1998.

Nov 2017 · 2 min
Data cleansing

Should I validate the contact details I collect online?

Get your website ready to start generating some valuable leads for your business.

Nov 2017 · 2 min
Compliance

Data Complaints and How To Deal with them Effectively!

There really is nothing worse than having to deal with customers who complain about the fact that you called them.

Oct 2017 · 2 min
Compliance

What do you need to know about the GDPR?

Less than a year remains before the new EU General Data Protection Regulation (GDPR) comes into effect.

Sept 2017 · 3 min
Data cleansing

Recruitment crisis slows down the progress in tackling cyber attacks

Data security issues are a painful topic to discuss for firms across Europe. Data protection has become a number 1 priority.

Sept 2017 · 3 min
Compliance

Why should you take customer complaints seriously?

Telemarketing is different from other types of marketing for it often involves phone interaction with people you haven’t contacted before.

Aug 2017 · 2 min
Compliance

What is the TPS?

Only if you are registered on the TPS, you can hope to reduce the number of spam calls.

Aug 2017 · 2 min
Compliance

Post-Brexit UK wants to keep EU data laws

The UK government has confirmed its desire to stay compliant with the existing European laws on data regulation, despite Brexit.

Jul 2017 · 2 min
Compliance

TPS Protect app launched to battle nuisance calls

Recently, the Direct Marketing Association (DMA) launched a free smartphone app, called TPS Protect.

Jun 2017 · 2 min
Data cleansing

The importance of data cleaning

Learn why it is important to cleanse your database and ensure data quality remains high.

Jun 2017 · 3 min
Phone validation

Mobile Verification has evolvedinto Data Soap

Data Soap is the new face of Mobile Verification – the comprehensive data cleaning service that has enjoyed considerable success in the first years of its existence.

Jun 2017 · 3 min

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