Free phone line type checker
Find out if a number is a mobile, landline, VoIP, toll-free or premium line — so you know whether it can receive SMS and how much to trust it.
- Mobile vs landline
- VoIP detection
- Toll-free & premium
Line Type Checker
Instant results · No signup required
- Valid or invalidIs the number real and in service
- Line typeMobile, landline, VoIP, toll-free
- Carrier & locationNetwork, country and region
- Risk scoreSpot fake and high-risk numbers
What the line type checker tells you
Mobile vs landline
Know whether an SMS will actually be delivered.
VoIP detection
Spot internet numbers often used for throwaway accounts.
Toll-free & premium
Catch business lines and premium-rate numbers.
Risk context
See how the line type affects the risk score.
Questions about the line type checker
Need more than a few checks a day? Create a free account for 100 credits, bulk CSV uploads and API access.
Why does line type matter?
Only mobile numbers reliably receive SMS. Sending texts to landlines wastes money, and VoIP or premium numbers are more often linked to fraud.
Can a ported number change line type?
Yes. When a number moves between carriers its line type can change, which is why we check live data rather than the original number range.
What does "VoIP" mean?
Voice over IP — a number provided over the internet by an app or cloud phone service instead of a traditional carrier.