DNS Security Checker
Analyse your domain's DNS records and receive security recommendations
DNS API Access Required
This tool uses a public DNS API for lookups. Select a different provider if the current one isn't responding.
Enter DKIM selector (e.g., default, google, mail):
Common selectors by service (click to add):
Common formats:
selector1
selector2
k1
k2
s1
s2
ProtonMail:
protonmail
protonmail1
protonmail2
protonmail3
Constant Contact:
ctct1
ctct2
Zendesk:
zendesk1
zendesk2
Other services:
default
mail
email
dkim
litesrv
sm