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About Us

About Number Portability Lookup

Number portability lookup is a worldwide, realtime, carrier dip service enabling you to lookup the mobile network provider of any MSISDN number on the worldwide GSM network, or any landline or mobile number within the US and Canada. Lookups are available as manual web queries, or via an automated electronic API (application programming interface) to interface with your own systems. is owned and operated by Comcetera™ Ltd.

About Comcetera™

Comcetera™ Ltd is a limited liability company (number 6058188) registered in England and Wales.

The team behind comcetera have extensive experience and background in mobile messaging solutions, having been working with SMS messaging services since 1998, with the launch of the "textXpress" service offered under the VoiceMart and UKMobile brands.

Our experience in SMS solutions quickly led to the creation of our own SMS platform, developed entirely in-house, which soon made us aware of the need for a cost effective number portability lookup tool.

Discovering how hard it was to find a system that met our needs at a cost effective price, we developed our own solution, leveraging the benefits of a number of existing number portability solutions and aggregator relationships, and adding our own lookup intelligence logic to provide a high quality, low cost, worldwide service. We have now made the resulting solution accessible through this site to benefit others.

For more information on Comcetera™, please visit our corporate site at:

© 2016 Comcetera Ltd. is a product of Comcetera™ Ltd
Comcetera Ltd is Registered in England, Company 6058188 at Unit 13 Freeland Business Park, Poole BH16 6FH.