Docs / Reading verdicts · 6 min
Reading verdicts
What allow and block mean, and the response logic behind them.
The response
Each lookup answers with fraud_check (allow or block) and fraud_check_comments (the human-readable reason, including the Twilio line type). The dashboard logs every verdict with the masked caller number, line type, and whether it was a cache hit.
Response logic
- Allow, mobile, landline, fixedVoip, personal: real reachable callers go straight through.
- Block, premium, sharedCost, pager: revenue-fraud and solicitor number classes.
- Block, unrecognized line types: new Twilio classes block by default until reviewed.
- Allow, lookup failed or timed out: a check that did not run never blocks a genuine caller.
Verdicts cache for a day per number, so repeat callers answer instantly and cost no extra Twilio lookups.