How can I check if a phone number is still active without calling it?
Ask the network that holds the number: 1Lookup's HLR lookup sends a live network query, not a call or a text, and returns active, temporarily unreachable or no active line for a mobile number. It costs 5 credits, $0.02475 a lookup on the Starter plan, and US and Canadian numbers return assigned or not assigned instead.
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These are the steps.
- Write the number with its country code, for example +44 for the United Kingdom.
- Enter it in the free disconnected number checker.
- Read the answer: active, temporarily unreachable (switched off or out of coverage), no active line, or unknown.
- For a list, validate the numbers first at 1 credit each and run HLR only on the mobile ones.
Check one number now with our free disconnected number checker.
To run it on a list or from your own software, see the HLR lookup API.
These are the next questions buyers ask.
- What is the best HLR lookup service to check if a mobile number is active?
- How do I clean my phone list before an SMS campaign?
- Is there a free phone number checker for international numbers?
See all the questions answered in the help section.