Every monitor includes its certificate and its domain registration, without taking another slot. You hear about an expiring certificate 14 days ahead and about a domain registration a month before it lapses.
Checked every six hours. An expired certificate or a chain that does not validate is flagged immediately: a date in a certificate is a fact, not a network guess.
Read straight from the registry (RDAP, or WHOIS where RDAP is not offered) for .si, .com, .it, .hr, .rs, .io and more. A warning at 30 days, urgent at 7.
Other tools charge a monitor for each of these. Here they come with the target you already monitor.
Some registries (.de, .eu, .at, .ch) do not publish expiry dates. For those we show "not published", never a green tick for something we could not see.
Uptime monitoring
HTTP, TCP ports and ping, from six regions
Performance monitoring
Response time per location and page load from PageSpeed
Deploy tracking
Every deploy measured before and after
DNS history
What changed in your DNS, and when
Alerts
Email, Slack, Discord, Telegram and webhooks, without spam
Status pages
One public page for all of a client's services
Maintenance windows
Planned work that does not page anyone
No card, no trial countdown. Add a monitor and it starts being measured before you finish reading this sentence.