25. March 2014 · Write a comment · Categories: hlr, mnp, OTP


Using OTP (PIN) to enable access to services and features is a common practice. OTP (PIN) with SMS refers the delivery of One-Time Passwords to customers mobile phones. This model enhances previous flows and enables it to become more secure, flexible, cost efficient and user-friendly.

Recent statistics show that up to a staggering 20% of PINs are not delivered successfully to users’ mobile phones, with close to 50% of PINs not arriving at their destination due to invalid MSISDNs provided by the mobile phone subscriber at entry.

On top of this, over 10% of PINs failed to be delivered due to inaccurate entry, technical issues and such like. These are startling statistic, so we’re discussing what can be done.

Using Number Lookup to verify and validate your mobile numbers

You can avoid the issues highlighted above by introducing HLR Discovery Lookup. This will enable you to verify and validate all your numbers more efficiently and reduce the chance of sending PINs to invalid or inaccurate mobile numbers.

To combat these technical difficulties you can use HLR Number Lookup to verify where the mobile subscribers are located and check their MSISDN in real-time, before sending them a PIN.

Advantages of OTP (PIN) using SMS:

  • High conversion rates
  • Effective screening tool
  • Easy to use
  • Better user experience
  • Instant verification
  • Cheap: Cost Effective compared to other options

Read more - Get the best results from SMS Marketing

Take a look at our previous Webinar, using HLR Number Lookup for Mobile Marketing.

View our SMS API’s

View our HLR Lookup API

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