HLR Active Subscriber Query

The HLR Active Subscriber Query service identifies whether a subscriber with a corresponding mobile phone number (MSISDN) is a valid subscriber or not.

This service helps to identify invalid or unused numbers and reduces ongoing cost of messaging to such numbers for Wireless Application Service Providers, MVNOs, MVNEs, SMS aggregators and resellers, mobile infrastructure providers and mobile operators.

Reduce costs on Invalid or Non-active Phone Numbers

With today's high churn rates of subscribers, mobile service providers have to deal with an increasing number of invalid or non-active phone numbers. The Active Subscriber Query helps the mobile industry to identify invalid or unused numbers thus reducing ongoing cost of SMS sending to such numbers. By identifying invalid numbers, customers save on SMS sending to unused or non-active numbers.

Real Optimisation of SMS Routing

Active Subscriber Query service validates mobile phone numbers before delivery of contents or services, also supporting mobile number portability functionality in SMS sending. Available as a web service, HLR Active Subscriber Query provides information in a real time basis.

High Performance Handling of Messages

Our HLR Number Lookup enables the identification of valid MSISDN's in more than 340 networks worldwide. Additionally, txtNation provides customers with technical support and customer care. These services are available 24 hours a day, every day.


Services enabled by Active Subscriber Query
• User verification of existing database for consistency
• Validation of mobile phone numbers before delivery of contents or services
• Validation of mobile phone numbers received from questionnaire / marketing campaigns


Request more information on our HLR Active Subscriber Query solution »