Check DNS propagation
See whether the big DNS services show the new answer, and how long the old one may linger.
More tools
- WHOISSee the registrar, when the domain was registered and expires, its status and name servers.
- DNS lookupSee A, MX, TXT, NS and the other DNS records, and whether SPF and DMARC for email are set up right.
- SSL checkCheck the SSL certificate: validity, issuer, domain match, certificate chain, TLS versions and HTTPS.