The site answered 200 in 694 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

Could not read: dns, tls, whois, dnssec, blacklist, email-auth, security-score.
Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on iot-twm-alerts.com.
Reference: /llms.txt.
IPv6. Does iot-twm-alerts.com work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
Watch iot-twm-alerts.com. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.
Watch — $1 / 30 days