10/25missing: Mail Server Configuration, IPv6 Support
Domain Reputation
35/35
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 2 lookups
SURBL MultidomainURIBL Multidomain
Green: clean. Red: listed. Grey: the list did not answer.
Ask it yourself
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.
curl "https://how.is/v1/domain/trust?domain=crcdn.pro" \
-H "Authorization: Bearer $HOWIS_KEY"
# or pay per call in USDC (x402), no key: the 402 tells your agent the price
curl -i "https://how.is/v1/domain/profile?domain=crcdn.pro"
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on crcdn.pro.
Reference: /llms.txt.
Watch crcdn.pro. DNS read at the source every 5 minutes;
certificate, blocklists and expiry every 6 hours. You get an email only when something changes.