Introduction to API V1

Welcome

Welcome to the HLR Lookup Documentation for the old version of our API (v1)

If you are a new user of the HLR Lookup API we strongly advise you use our newest API version (API v2) of which the documentation can be found here - API V2

The following pages will provide info on the following:

• How to make a request

• How to understand the results

• How to include additional parameters with your requests

• How to understand any errors you receive

If there’s anything you don’t understand feel free to raise a support ticket and a HLR engineer will respond.