The 5th Emergency Service

External Exposure Scanner
Free business security check

See what your domain exposes to the internet

Enter your business domain and we will run a safe external configuration review covering email authentication, domain registration and publicly visible certificate hostnames.

Scan in progress…Checking DNS, SPF, DMARC, MTA-STS, TLS-RPT, registration data and certificate-transparency sources. This can take several seconds.

This public check performs passive DNS, RDAP and certificate-transparency lookups. It does not attempt passwords, logins, exploitation or port scanning. Results expire after 24 hours.