tellows API Partnership Program

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Solutions for Developers and Businesses

Identify and blocks unwanted calls

Gain access to our database of reported scam numbers in over 50 countries worldwide. A perfect way to create a blacklist and filter calls. Integration is possible for phones, apps, telephone systems (VOIP, PBX).

Track caller history and improve your reputation

Manage your caller reputation and track your outgoing calls. A perfect way to improve customer engagement and satisfaction and keeping an outstanding tellows score.

Enhance online presence management

Improve your online presence and make sure people can find your correct company details. Present your professional business and your contact information. Build brand awareness and reach a wider audience with tellows.

Monitor marketing campaigns

Use our API to access phone call statistics of other businesses that can be used for marketing purposes. Get detailed data such as geolocation of calls made by your competitors to respond at the right time.

Trusted by Many of Successful Businesses

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tellows API Adapts to Your Needs

The Scorelist API includes all currently reported phone numbers and its details defined with the parameters, to receive an up-to-date blacklist in a CSV format. The scorelist API is the most purchased type of API in the tellows shop, as it provides stable protection by flexible access. This API is especially designed for Apps and PBX which work with a daily up-to-date blacklist.

The Live API provides real-time caller protection with live data, which includes all details about a phone number. Once the blacklist is downloaded, the Live API can be used to gather further information for every number on the blacklist with all possible caller names, caller types or comments etc. This service can be integrated into lookup services or widgets that need to provide live data.

The Reputation API / Company API allows companies to track the caller history and customer satisfaction of company operatives. It is possible to target certain keywords that are associated with the company or track a list of numbers that are assigned to the company. Monitor the caller quality with the help of the tellows ratings. This service is especially designed for companies operating call centres or sales employees performing outbound calls. With the help of the tellows data, the service quality and reputation can be improved.
API documentation

Contact Us

If you are interested in a partnership, please send us a message with your company details, your field of application and your use of the tellows data. We are happy to answer your questions.

Contact Form or by eMail: chris(AT)