CheckServer is a free domain monitoring service that checks DNS records, SSL certificates, uptime, HTTP status, redirects, and response performance. Built for fast, reliable answers.
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Everything you need to monitor domains quickly, automate checks, and keep services stable without losing time on manual work.
Simple endpoints for checks, automation-friendly webhooks, and CI/CD readiness.
DNS, SSL, uptime, redirects, and response timing — all in one clean dashboard.
Store your past runs and see degradation or improvements over time.
Share and reuse check presets for common stacks and infrastructures.
Run a domain health check in seconds. Add a domain, choose what to verify, and get clear status results. You can run one-off checks or set up recurring monitoring with alerts.
Enter your domain or API endpoint. The system prepares DNS, SSL, and HTTP checks instantly.
Check DNS records, SSL certificate validity, HTTP status, redirects, and response time.
View a clear summary, detailed logs, and historical trends for troubleshooting and reporting.
Send notifications to Telegram, Slack, or email when thresholds are exceeded.
CheckServer is a free domain health check and monitoring tool for developers and teams. It verifies DNS records, SSL certificates, uptime, HTTP status codes, and response times in seconds.
Validate DNS records, detect propagation issues, and confirm SSL certificate status.
Track availability and HTTP response codes to catch outages before users do.
Measure response time and identify slow endpoints or redirect chains.
Get alerts via Telegram, Slack, or email and automate checks with webhooks.
Everything that reduces ops friction and boosts reliability.
Set thresholds and get notifications where you work — Telegram, Slack, email.
Share domains, permissions, and dashboards across your team.
Ready-to-use configurations for popular services and frameworks.
Built for teams that need fast answers: check SSL expiry, verify DNS propagation, confirm uptime after deployments, and track response time changes over time.
Use CheckServer to verify deployments, monitor critical services, and troubleshoot domain health fast.
Confirm DNS changes and SSL issuance after releases or infra migrations.
Detect expiring or misconfigured SSL certificates before they break user trust.
Track uptime and HTTP status for public endpoints and internal services.
Spot slow response times and redirect loops that increase latency.
CheckServer fits both solo developers and teams: QA can validate production endpoints, DevOps can watch for SSL issues, and product teams can keep critical flows online.
Practical answers for developers who monitor domains, APIs, and production traffic daily.
DNS resolution, SSL validity, HTTP status codes, redirect chains, and response time. These cover the most common outages and config issues.
Alert at 30, 14, and 7 days before expiry. That timing gives you runway to renew without spamming the team.
Immediate alerts for 5xx, watch for sustained 4xx spikes, and flag unexpected 3xx changes.
Critical endpoints: 1-5 minutes. Non-critical: 10-30 minutes. Tune for signal vs. noise.
Check multiple resolvers and regions until the new record is consistent everywhere.
Use stable periods to set a baseline. Alert when latency doubles or crosses a fixed threshold.
Require consecutive failures, use multi-region checks, and separate warning vs. critical alerts.
Yes. Use the API after deploys to validate DNS, SSL, and HTTP status before routing traffic.
If you need higher frequency checks or custom integrations, create an account and build a monitoring workflow with alerts and webhooks.
Your support keeps servers running and new features shipping.