Domain Check: is it still online? | SaaS OutpostMay 2026 cohort / Security and privacy

Checks a domain’s email authentication DNS records for security and deliverability issues.
- Status
- Onlinesince Nov 5, 2026
Last 30 days
100% of checks answered · median response 1,451 ms
- Oct 8, 2026: Not checked
- Oct 9, 2026: Not checked
- Oct 10, 2026: Not checked
- Oct 11, 2026: Not checked
- Oct 12, 2026: Not checked
- Oct 13, 2026: Not checked
- Oct 14, 2026: Not checked
- Oct 15, 2026: Not checked
- Oct 16, 2026: Not checked
- Oct 17, 2026: Not checked
- Oct 18, 2026: Not checked
- Oct 19, 2026: Not checked
Domain and certificate
- HTTPS certificate
- valid to Jan 6, 2027 · 2 months left
The .io registry doesn't publish registration data over RDAP, so only the certificate is shown.
History
Launched
· Launch announcement
Online
· online
- Last checked Nov 6, 2026
Similar products, all online at their last check.
OnlineChecks a domain’s email DNS records and reports configuration issues for email administrators.
OnlineAudits a domain’s DNS, email authentication, SSL/TLS, and website security for IT and security professionals.
Oct 20, 2026: Not checkedOct 21, 2026: Not checkedOct 22, 2026: Not checkedOct 23, 2026: Not checkedOct 24, 2026: Not checkedOct 25, 2026: Not checkedOct 26, 2026: Not checkedOct 27, 2026: Not checkedOct 28, 2026: Not checkedOct 29, 2026: Not checkedOct 30, 2026: Not checkedOct 31, 2026: Not checkedNov 1, 2026: Not checkedNov 2, 2026: Not checkedNov 3, 2026: Not checkedNov 4, 2026: Not checkedNov 5, 2026: Online (1 of 1 checks answered)Nov 6, 2026: Online (1 of 1 checks answered)Oct 8, 2026- Online
- Some checks failed
- Down
- Not checked
Today Daily checks started Nov 5, 2026.
OnlineChecks and monitors email authentication records to help domain owners prevent spoofing and improve email delivery.
OnlineMonitors domain DNS changes and security posture, alerting teams through Slack, email, or webhooks.
OnlineChecks a domain or IP for exposed hosts, open ports, software versions, known vulnerabilities, and web security issues.
OnlineChecks a domain’s email authentication against NIS2 Article 21 controls.