// Glossary
Line-Type Validation
Checking whether a phone number is a live mobile, landline, or VoIP line, and whether it's connected.
Definition
Line-type validation identifies whether a number is a working mobile, landline, or VoIP line and whether it's currently in service. It matters for skip-traced lists because it filters out disconnected and reassigned numbers before you dial, saves time on dead air, and helps you route texts only to mobile lines that can receive them.
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