DNS · Email · TLS · Website security
Tools
Choose a tool below. These tools help you check the technical settings of a domain, email service or website.
Email settings check Check MX, SPF, DMARC and DKIM settings in one scored report. DNS lookup Check A, AAAA, MX, NS, TXT, SOA and CAA records for a domain. DNSSEC check Check a domain’s DNSSEC status, DS records, DNSKEY records and validation result. CAA check Check a domain’s CAA records and allowed certificate authorities. SPF check Check the domain’s SPF record and authorized email senders. DMARC check Check the DMARC policy, reporting addresses and subdomain settings. MTA-STS check Check the domain’s MTA-STS TXT record and HTTPS policy. TLS-RPT check Check the domain’s TLS-RPT reporting record and rua addresses. DKIM check Check a DKIM selector and public DKIM key from DNS. TLS/SSL certificate check Check certificate validity, issuer, names and TLS connection details. HTTP security headers Check the most important HTTP security headers for a website.