Upcheck

Upcheck monitors websites across four critical vectors: uptime, SSL certificates, DNS, and domain registration status. The platform is designed to identify small technical issues before they escalate into full outages, providing alerts to teams via email, Slack, Discord, Microsoft Teams, or custom webhooks. What it checks: - Uptime: HTTPS probes every 5 minutes, with a second failed probe required before anyone is paged, so you don't get woken up by a blip. - SSL certificates: validity, chain, hostname coverage, and expiry, re-checked twice a day. - DNS: resolution every 6 hours, plus alerts when A, AAAA, NS, or MX records change unexpectedly. - Domain registration: expiry and registry holds tracked daily over RDAP, so a forgotten renewal never takes the site down. Pricing is one plan: $10/month plus $1 per website. Every alert channel is included and there are no seat fees, so the whole team can be on the alerts.