WEB / SEQUENTIAL SERVER CHECKS
Domain report
Collect DNS records, HTTPS response observations and TLS certificate checks for one public domain. Keep completed observations beside unavailable checks, with an export you can compare after a change.
Choose a domain
No report has been requested.
Report observations
“Observed” means a validated response was received, including DNS NODATA/NXDOMAIN/SERVFAIL or an HTTP error status. It is not a pass score. Open each card for the evidence and its limits.
Use the report
Inspect address records and MX destinations, review DNS TXT policies, then check the HTTPS status and certificate trust. Use the independent DNS Toolbox, HTTP Analyzer and TLS Analyzer for deeper inspection or a different port. Copy results into Report comparison to inspect changes locally.
Mail records are one part of mail configuration
TXT and _dmarc results are record views. The selector must come from the actual mail configuration; this tool does not guess selectors. It does not evaluate SPF for a sending IP, discover inherited DMARC policy, verify a message’s DKIM signature, inspect outgoing PTR, test SMTP delivery or guarantee inbox placement. A real-message analyzer needs the message and trusted receiving-server context.
Limits and privacy
DNS uses the fixed Google Public DNS resolver. NS is a recursive view, not a parent-delegation test. Resolver DNSSEC flags are not local signature verification or a propagation score. Only the entered domain and optional public selector are submitted; MX/NS addresses returned by DNS are not contacted. HTTPS and TLS resolve and revalidate their own targets against the existing network policy, which also blocks this service’s own addresses.
Requests run sequentially, with an eight-second client limit per check and a sixty-second total limit. Rate, access or service errors stop queued checks. Other failures remain explicit while later independent checks continue. HTTP uses anonymous HEAD at the domain’s HTTPS root; no response bodies, cookies or authorization values are retained. Results stay in page memory until inputs change, Cancel is selected or you leave. No history is saved. Copied reports contain public domain, selector and diagnostic metadata.