Phone Line Type Lookup
Instantly check whether a phone number is a mobile, landline, or VOIP line before you dial or text.
# free & rate-limited · no signup
Three quick steps
Enter a number
Paste any US phone number.
Live lookup runs
We classify the line and identify the carrier.
Read results
See mobile, landline, or VOIP with carrier.
Line classification
Mobile, landline, or VOIP detection.
Carrier data
Return the carrier and network type.
SMS suitability
Know if a number can receive texts.
Fast results
Sub-second classification.
Who uses it
SMS marketing
Filter out landlines before texting.
2FA
Confirm a mobile can receive codes.
Lead quality
Prioritize mobile-reachable leads.
Developers
Gate flows by line type.
FAQ
Is this line type lookup tool free?
Yes. It's free and rate-limited with no signup required to try. For higher volume and API access, create a free account with 1,000 lookups included.
How accurate are the results?
This free tool returns demo results to show what the API delivers. The production API is sourced from carrier, regulatory, and authoritative data updated daily.
Can I use this in bulk or via API?
Yes. Sign up for API access to run single lookups, bulk CSV jobs, and async processing with webhooks — all on one universal credit balance.