How can HLR requests optimize SMS campaigns while saving businesses money? In the following post we explain to you what HLR means, how to use it as a feature and who benefits the most.
What is HLR?
The abbreviation stands for Home Location Register (German: Heimatregister). Meant is the respective database of mobile network operators (MNOs), in which all mobile numbers belonging to the network are stored. Each MNO has its own register, so there is no central index. If a new number is assigned, it is also automatically registered in the corresponding HLR and displayed in parallel on a VLR (Visitor Location Register). This second register makes it possible to locate a mobilization within the network.
Would the database of a mobile network operator fail, no assignment of the numbers or participants affected would be possible. Connections could then no longer be made and the receiving device would virtually put out of action. In 2009, such a disaster occurred at the provider T-Mobile. Millions of mobile phone users were totally upset for three hours because they couldn’t make calls, surf the web, send SMS, let alone receive anything. That’s when you realize how essential mobile communication is for our generation. HLRs are an integral part of it.