Free Website Monitoring Tools

Run quick checks for SSL certificates, DNS blacklists, email auth (DKIM / SPF / DMARC) and website uptime - no login required.

Rate limit: 10 requests per hour per IP address to keep the tools fast and abuse-free.

Explore tools

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See certificate issuer, expiry date and chain issues for any HTTPS domain.

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Check if your domain or IP appears on major DNSBL spam blacklists.

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Validate your email authentication DNS records to avoid spam folders and bounces.

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Ping your site from multiple regions and see response times and HTTP status.

Create a free account to schedule automatic checks and get alerts when something breaks.

Shareable results: every tool generates a permalink you can share with clients or teammates.

How It Works

Set up a monitor once, and we'll run these checks for you automatically - no cron jobs or scripts required.

We check your certificate chain every 6 hours and alert you 30, 14, 7 and 1 day before expiry.

We query 50+ DNSBL servers every 6 hours. If you appear on a blacklist, you'll get an email immediately.

We verify your DKIM, SPF & DMARC DNS records every 6 hours so you never silently break email delivery.

All tool monitors are included in every plan - even the Free tier.

No hidden upsells. SSL, DNSBL, and email auth checks run automatically every 6 hours for all users.