DNS Checker
See the bounded public address answer for a domain before investigating the application.
Run DNS Checker →QUICKFIX / FOUNDING PILOT
Choose the public signal you need.
Run a bounded free check, keep its evidence and decide whether a fuller review would help. No card, credentials or lead form is required to see the result.
SSL / TLS Checker
Inspect public TLS certificate identity and validity metadata from a bounded handshake.
Run SSL / TLS Checker →SPF Checker
Find the published SPF TXT record for a public domain.
Run SPF Checker →DMARC Checker
Read the public DMARC policy record without sending mail or accessing a mailbox.
Run DMARC Checker →Email Security Checker
Bring the existing SPF and DMARC public-record observations into one view.
Run Email Security Checker →Security Headers Checker
Inspect allowlisted security-related headers on a bounded public HTTP response.
Run Security Headers Checker →Redirect Checker
Follow a bounded public redirect chain and inspect the final response metadata.
Run Redirect Checker →Robots.txt / Sitemap Checker
Check public crawler-file availability and bounded sitemap discovery.
Run Robots.txt / Sitemap Checker →