The Phone Data Quality Report 2026
Disconnected-number rates, line-type mix, and why dialing un-validated lists wastes a third of your reps' time.
Key findings
- ◆Roughly a fifth of numbers on an aged list are already disconnected.
- ◆Un-validated dialing wastes about a third of rep talk time.
- ◆Validating line type keeps SMS spend on textable mobiles only.
The hidden cost of un-validated numbers
Phone lists decay like email lists, but the waste is more visible: every disconnected number is a rep's minute spent on hold tone. On aged or aggregated lists, the disconnected share climbs fast.
Line type changes everything for SMS
Texting a landline is wasted spend. Validating line type before an SMS campaign means messages only go to textable mobiles — and you avoid carrier penalties for high invalid rates.
- Validate line type and active status before dialing or texting.
- Filter landlines out of SMS campaigns.
- Re-validate aggregated and skip-traced lists before they reach a rep.
Methodology: Illustrative analysis modelled on phone-validation outcomes across contact lists. Figures are illustrative and will be updated with live anonymized data. Free to cite with attribution to BounceBlock.
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