How it works
Every mobile network keeps a register of its subscribers. An HLR lookup queries it and returns whether the number is live, which network it's on and whether it has moved network.
Why it saves money
- Agents stop wasting time on dead numbers.
- You stop paying to send texts that never arrive.
- Your dialler connect rate goes up.
HLR on DataMembership
Tick "HLR checked" when you order and every mobile is checked before delivery. The small extra cost per record is shown before you pay. Need to clean your own lists? Our sister site CleanMyDatabase.com does HLR checks on any file.
Questions
Does an HLR check call the number?
No. It queries the network register; the phone doesn't ring.
This guide is general information, not legal advice. For the full rules see the Information Commissioner's Office (ico.org.uk). Last updated October 2026.
