DNS Tools
Live SPF and DKIM record lookups — check what's actually published in DNS right now.
SPF Record Checker
Fetches the SPF TXT record, parses all mechanisms, counts DNS lookups, and flags issues.
Domain
Looking up DNS records…
Common domains to check
gmail.com
outlook.com
sendgrid.net
amazonses.com
mailchimp.com
mailgun.org
DKIM Selector Checker
Looks up a DKIM selector record, checks key presence, type, bit-length, and flags revoked or weak keys.
Domain
Selector
Looking up DNS records…
Common selectors to try
google
selector1
selector2
ses
k1
mail
dkim
default