IP address, subnet, domain or email address Check

Options

DKIM selectors

An IP address Is it on a blocklist? What do Talos and the good-sender lists say? Does its name tag match? 50 lists · 16 threat feeds · Talos · reverse DNS A subnet Every address in a range, up to a /24, checked one by one as you watch. up to 254 addresses · main lists · threat feeds · reverse DNS A domain or email Can it receive mail, and will its mail be trusted? Everything a mail service checks. MX · SPF · DKIM · DMARC · MTA-STS · WHOIS · threats