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Phone Line Type Check

Classifies a phone number as mobile, landline, VoIP, toll-free, or other.

Module
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where it lives

What it does

Classifies a phone number as mobile, landline, VoIP, toll-free, or other

Takes a phone number and returns its line type and carrier. Covers mobile, landline, fixed VoIP, non-fixed VoIP, toll-free, and several other classifications. The line type changes what the number can be used for, so the result is shaped for routing decisions downstream.

When you’d reach for it

  • Filtering landlines out of a list before sending an SMS campaign.
  • Flagging non-fixed VoIP numbers in a new-customer signup flow for additional review.
  • Routing calls differently depending on whether the destination is a mobile or a landline.