Number Lookup

The Infobip Number Lookup service identifies which network a particular mobile phone number belongs to, as well as provides an existence check for every MSISDN queried. If a particular country has implemented Mobile Number Portability (MNP), then this procedure, also known as network query or MNP check, is necessary.

Number Lookup helps you optimize SMS and voice routing and avoid cost and effort of messages returned or calls failed due to MNP by identifying invalid or unused numbers. It can be also used in SMS banking or SMS marketing operations to determine the availability of end recipients, and as a way to clean mobile number databases.

Features of the Infobip Number Lookup


  • Access to HLR registries of 400+ mobile operators over SMPP or HTTP
  • Access to IMSI (International Mobile Subscriber Identity)
  • Access to the SMSC serving the mobile number, enabling easy user location
  • Available as a web service, provides information in real time
  • Provides detailed information on the queried MSISDN, such as the operator’s name, even if the handset is switched off

Benefits of the Infobip Number Lookup


  • Increased Average Success Ratio (ASR)
  • Minimum extension of the Post Dial Delay (PPD) index
  • Real-time verification of existing database
  • Real-time handling and reduction of failed SMS sending
  • Real-time relay of SMS-MT records to a subscriber's network operator

The Infobip Number Lookup ensures reliability, and maintains your successful delivery rate even if a subscriber has changed the mobile service provider.

Using our Number Lookup service, you can offer your users lower prices and better service, and ensure the stability of your business. If you wish to find out more about our Number Lookup service, visit our technology section.

Contact us today to sign up for a free test account and discover how Infobip powers your mobile business!

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Brochure HLR Number Lookup
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