Dial Decision API
Ask the question you actually have. One call returns a verdict on a phone number — clear, caution or do-not-call — built from line type, the carrier holding the block, public complaint history and your own do-not-call list, with the reason behind each finding.
The compliance line, stated plainly
A business landline and an owner's mobile are not the same call, and the difference is expensive
Landline or wireless, and why it matters
A business's published landline falls under the business-to-business exemption from the national registry. A wireless number never does — the TCPA treats every wireless number as residential, so an autodialed call needs prior express consent.
Your own suppression list, in the same answer
The people who already asked you not to call are checked against the same request, not a separate one you might forget.
Complaint history from public regulator data
FTC and FCC complaint records, refreshed daily, folded into the verdict rather than reported beside it.
Reasons with stable codes
Branch on the code, not on the sentence. Every finding says whether it blocks, cautions, or is context.
It names what it did not check
The federal registry, the state lists, the litigator database and the live network dip are bought per call and have their own endpoints. Every answer lists them rather than letting you assume they were included.
Unresolved means strict
When we hold no carrier record for a block, the number is treated as wireless, because that is the rule that carries the penalty.
Dial Check use cases
Common workflows teams run with this data.
Before the dialer
Screen a list so agents spend their minutes on numbers that can be called.
- Drop dead numbers
- Separate mobiles from landlines
- Respect your own list
Consent-aware outreach
Know which numbers need prior express consent before an autodialer touches them.
- Flag wireless
- Record the reason
- Keep the evidence
Inbound qualification
Judge an unknown caller in one request instead of three.
- One integration
- One verdict
- One receipt
Start using Dial Check today
One API, universal credits, and 200 free credits a month. Live in about five minutes.