Free Website Monitoring Tools
Run instant checks for SSL certificates, DNS blacklists, email authentication (DKIM / SPF / DMARC) and website uptime – no login, no credit card, just results.
Rate limit: 10 requests per hour per IP address to keep the tools fast, fair and abuse‑free.
Browse ToolsFree SSL Certificate Checker
See issuer, expiry and full certificate chain details for any HTTPS domain.
Check SSLDNSBL Blacklist Checker
Check if your sending IP or domain appears on major DNSBL spam blacklists.
Check DNSBLDKIM / SPF / DMARC
Validate DKIM, SPF and DMARC DNS records to avoid spam folders and hard bounces.
Check Email DNSWebsite Uptime Test
Test your site from multiple regions and see response times and HTTP status codes.
Check UptimeDomain WHOIS Lookup
Get complete WHOIS information including registrar, creation date, and registration details.
Look Up WHOISNeed more than one-off checks?
Create a free account to schedule automatic checks, publish status pages and get alerts when something breaks.
Create Free AccountFree tools above + automated monitoring for every plan
Set up a monitor once, and we'll run these checks for you automatically - no cron jobs or scripts required.
SSL Monitoring
We check your certificate chain every 6 hours and alert you 30, 14, 7 and 1 day before expiry.
- Certificate chain validation
- Expiry countdown alerts
- TLS handshake verification
Blacklist Monitoring
We query multiple major DNSBL servers every 6 hours. If you appear on a blacklist, you'll get an email immediately.
- Checks across major spam blacklist providers
- Alerts only on status change
- Delisting guidance in email
Email Auth Monitoring
We verify your DKIM, SPF & DMARC DNS records every 6 hours so you never silently break email delivery.
- SPF record validation
- DKIM selector checks
- DMARC policy monitoring
No hidden upsells. SSL, DNSBL, and email auth checks run automatically every 6 hours for all users.
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