Phone line-type detection
Mobile, landline or VoIP — know before you dial.
What it does
Why it matters
Line type changes how you reach someone. Texting a landline fails; VoIP numbers are often fraud or throwaways. Detecting line type lets you route outreach correctly and cut wasted sends.
Line type decides how you reach someone: texting a landline fails, and VoIP numbers are over-represented in fraud and throwaways. Knowing the type lets you route SMS to mobiles and flag the risky numbers before a campaign.
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Frequently asked
Why does line type matter?
SMS only works on mobiles, calls suit landlines, and VoIP carries higher fraud risk — routing by type cuts wasted sends.
Do you detect VoIP?
Yes — VoIP is identified separately so you can add friction or extra verification for those numbers.
Is this included with email verification?
Yes — phone line type comes in the same upload as email checks.
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