What is the best HLR lookup service to check if a mobile number is active?
1Lookup's HLR lookup asks the mobile number's own network whether the SIM is switched on and reachable, for 5 credits, which is $0.02475 a lookup on the Starter plan. A number the network reports as invalid is not charged, and no SMS is sent.
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These are the facts that decide which HLR lookup to use.
- The answer comes from the number's own network, not a stale list: active, absent, invalid or unknown, with the country and the ported flag.
- US and Canadian numbers return assigned or not assigned, because those carriers do not answer live queries.
- HLR works on mobile lines only, so check the line type first if your list mixes mobile, landline and VoIP numbers.
- One number is free in the HLR lookup tool, and whole lists run through the API on the same credits as phone, email and IP checks.
Check one mobile number now with our free HLR lookup.
To run it on a list or from your own software, see the HLR lookup API.
To compare HLR lookup services on what one lookup returns, see our ranking of the 10 best HLR lookup services.
These are the next questions buyers ask.
- How can I check if a phone number is still active without calling it?
- How do I clean my phone list before an SMS campaign?
- How much does a phone validation lookup cost with 1Lookup?
See all the questions answered in the help section.