How many phone numbers are invalid or disconnected?
On 2026-11-12, 0% of the 5,703 numbers checked on the 1Lookup platform matched: that is the share of checked numbers coming back invalid or disconnected.
Every completed lookup on 1Lookup, 2026-11-12 (UTC). See the full briefing for that day.
What usually pushes this number up
- list age, since roughly a tenth of US mobile numbers change hands each year
- typed-in numbers from web forms with no validation at the point of entry
- purchased lists that were compiled once and never re-verified
What brings it down
- lists validated at the point of collection rather than before the campaign
- recently collected first-party data
- a batch that had already been scrubbed elsewhere