Every time Telebase receives a query, we return up to six signals from the carrier network.
Each signal is sourced in real time and returned in a single normalised JSON response in under 500ms.
SIM Swap History
Was this SIM changed in the last 24, 48, or 72 hours? The single most reliable signal for account takeover fraud. A SIM swap before a wire transfer is a major red flag.
Number Status
Is this number active or disconnected right now — queried directly from carrier networks, not a static database. The most fundamental check before any transaction.
Number Type
Mobile, landline, or VOIP. Filter out numbers that don't belong in your fraud stack — VoIP numbers are disproportionately associated with fraud.
Carrier and Country
Which network owns the number, which country it's registered in, and whether it matches the user's stated location. Flag mismatches instantly.