Ban status, as an API.
One endpoint returns whether a number is banned, when it was checked, and the reason. Anonymous web check for a single number, API keys for everything else.
Free, no signup
Status, ban time and reason for one number at a time, rate limited per IP.
API keys
Mint, label and revoke keys from the panel. Plaintext is shown once, only a hash is stored.
Quota you can see
Daily counter per key plus X-Quota-Remaining on every response.
curl -H "Authorization: Bearer bc_live_…" \
"https://your-host/v1/check?number=5511999999999"