How to implement HLR request?

Question

SMS

How to implement your own service that implements HLR requests without using a provider (hlr.su, smsc.ru, etc.)?

Answer 1

Contact any ObSOS and explain your question.
You can contact, for example, one of the Big Three or rent your SMS gateway and enter into contracts with these operators.
You can become a reseller of one of the existing providers and get the opportunity to sell your services to end customers, for example , this one . Such providers give you the opportunity to provide your services and billing with a white label control panel, for example with your logo, domain and design. Including, as a rule, the cost of tariffs for you will be lower, in addition to sending HLR requests, you will be able to send SMS, register your service numbers on behalf of this company, etc. As a rule, in this case, apart from an agreement with this company, nothing more is required.
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Answer 2

The services you listed do not connect directly to the HLR. Yes, and not a single provider will give you the opportunity to directly connect to HLR / UDR, since it is essentially one per branch and, in the event of a software failure, several areas will fall. What you want is done via SMPP, contact your carrier for connectivity