Three answers for every number.
Query a number and get a clear view of the line behind it, before you call, route or trust it.
Line Type
Is it a mobile, a landline, a VoIP line or a toll-free number? Know what kind of line you are dealing with.
The Carrier
See who the carrier is for the number, so you can tell a consumer network from a wholesale or virtual provider.
Port Status
Has the number been ported or not? Find out whether it has moved away from its original provider.
Four line types, told apart instantly.
Every number you query is classified into one of four types.
Mobile
A number on a mobile network.
Landline
A fixed-line number tied to a physical location.
VoIP
A number delivered over the internet rather than a traditional line.
Toll-free
A free-to-call number, typically used by businesses for inbound calls.
Put the answer to work.
Knowing the line type, carrier and port status helps you make a better decision before the call connects, or before you pick up the phone.
Fraud Screening
Flag numbers on VoIP or unexpected carriers, and numbers that have recently changed provider, for a closer look.
Smarter Routing
Send each contact to the right queue or channel based on whether the number is mobile, landline, VoIP or toll-free.
Cleaner Outbound Lists
Check numbers before you dial, so agents spend time on lines that can actually be reached.
Caller Verification
Compare the number a caller gives you with what LineCheck reports about the line behind it.
One Query, One Answer
No complicated setup. Send a number, by API or on request, and read back the line type, the carrier and the port status.
Part of SentraKaya
Pairs with SentraKaya's detection of AI versus human interactions across voice, chat and email.
Query a number. Read the line.
Send a Number
Submit the phone number you want to check, including through the LineCheck API.
LineCheck looks it up
The number is queried to find the type of line, the carrier and whether it has been ported.
Act on the result
Use the answer to route, screen or verify, in your contact centre or fraud workflow.
Also available as an API.
Build LineCheck straight into your own systems. You get the same three answers, returned to your application instead of a screen.
Query by API
Send a number from your own application and receive its line type, its carrier and its port status.
Built into your workflow
Use the result to route, screen or verify inside your contact centre, your CRM or your fraud workflow.
Ask about API access
Tell us how you would use LineCheck and we will take you through the API.
See LineCheck on your own numbers.
Request a pilot and find out what is behind the lines that reach your business.