Phone List Validation & Cleaning

Phone list validation & cleaning maximizes the efficiency of your marketing campaigns and helps you to keep in touch with your customers.

Increase the performance of your marketing campaigns - clean your database from invalid or outdated phone numbers and focus on real people. To ensure full compliance with the FCC Telephone Consumer Protection Act (TCPA), our service also detects the exact line type (landline vs. mobile).

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Phone List Validation

Phone number lists can be submitted in plain text (.txt) format, or as comma-separated values (CSV) file. CRM systems, databases and spreadsheet software like Microsoft Excel are capable to export data to CSV.

Do you have a customer account already? Please login here.

Register for Your Free Phone Validation Account!

With our phone validation service you can check up to 100 phone numbers for free - just register for your free account here and we send you an email with the details.

Your First Name (*)

Your Last Name (*)

Your Company/Organisation (*)

Your Business Email (*)

An email with a personalized download link for your validation results will be sent to this address. Please enter your business email - we do not accept free email addresses for the trial registration.

EU General Data Protection Regulation

Please select one of the following options: I agree to the legally binding conclusion of the standard data processing agreement with Byteplant. Please download the data processing agreement and the documentation of the technical and organisational security measures to keep it with your documents. This account will never be used to process data of EU citizens, and is exempt from EU data protection legislation. I will negotiate an individual data processing agreement with Byteplant. The processing of your data will be suspended until the conclusion of this agreement.

Validation Task Details

Task Name (*)

Choose a unique name that allows you to identify this task.

Country (*)

Select a country if the phone numbers in your list are not in international format (no leading +).

Language (*)

Select the output language.

Phone Number List File (*)

You can upload a text or CSV file, one phone number per line, use Phone as column header and comma (',') as column separator.
Excel files must be exported to CSV first:

Open the file in Excel.
Click Menu | Save As (Other Formats).
Enter a name for the file and choose "Unicode Text (*.txt)".
Click Save.

The free trial is limited to 100 phone numbers.

International Phone Number Validation

Increase the performance of your marketing campaigns: clean your database from invalid or outdated phone numbers - save money and focus on real people. To ensure full compliance with the FCC Telephone Consumer Protection Act (TCPA), our service also detects the exact line type (landline vs. mobile). Our phone number validation service allows you to check any national or international phone number. We offer complete, full-service phone number validation in 240 countries world-wide:

Status: VALID/CONFIRMED, VALID/UNCONFIRMED or INVALID
Line type: FIXED_LINE, MOBILE, VOIP etc. - compliant with the FCC Telephone Consumer Protection Act (TCPA)
Geolocation: Region and city
Phone number correction and re-formatting according to national and international standards