What does Lemwatch monitor?

Lemwatch runs 20+ automated checks per site: uptime, response time, SSL/TLS expiry, domain expiry, DNS changes, sitemap health, broken links, content changes, SEO audits, mobile usability, security headers, and more.

Yes. The free tier monitors up to 5 sites. Pro is $19/month for 50 sites and Agency is $59/month for 100 sites, both with full feature access.

How is Lemwatch different from UptimeRobot or Pingdom?

Lemwatch bundles uptime, change detection, SEO audits, security scans, and a public API in one platform — features competitors charge separately for. It also includes team workspaces, white-labelled status pages, and a webhook system out of the box.

Does Lemwatch send alerts?

Yes. Lemwatch supports email, browser push, webhooks, and per-site notification routing so the right person hears about the right incident.

Is there a public API?

Yes. Pro and Agency plans get a public REST API with webhooks for sites, checks, incidents, and reports.

HTTP 523 Origin Is Unreachable

Cloudflare could not reach the origin server, likely due to DNS issues.

What 523 means

HTTP 523 is a Cloudflare-specific error meaning Cloudflare cannot resolve the origin server's DNS or route to its IP address.

Common causes

Incorrect origin IP in Cloudflare settings
DNS resolution failure
Origin server IP changed
Network routing issue

How to fix it

Verify the origin IP in Cloudflare DNS settings
Check that DNS records are correct
Ensure origin server is accessible from outside

SEO impact

Complete site outage through Cloudflare. Will be treated as downtime by search engines.

Monitoring tip

LemWatch monitors DNS resolution as part of its checks and can detect when origin IP changes cause reachability issues.

Lemwatch — All-in-One Website MonitoringUptime, performance, SEO, security, and change detection in one platform. Free tier available.Pricing · Features · Sign Up