Using the Asynchronous HLR Lookup API

The asynchronous API processes up to 1,000 MSISDNs per request and returns results via progressive, automated callbacks to your web server. Results are returned via an HTTP REST API Post request in form of JSON objects. The asynchronous API is optimized for bulk and high volumes. Please refer to our performance benchmarks for throughput estimates.

The asynchronous API is optimized for speed, bulk and high volume requirements. It can process up to 1,000 MSISDNs per request and eliminates network overhead and other constraints of the synchronous API. Our system processes the lookup requests in parallel and returns HTTP callbacks with up to 100 results per request to an endpoint on your server.