Your domains are infrastructure too
You already monitor servers, queues and deploys. But the domain layer — DNS, WHOIS, certificates, registration — sits underneath all of it, and when it breaks, a green server doesn't help. A changed A record routes traffic nowhere. An expired certificate breaks every HTTPS handshake. A lapsed registration takes the whole zone down. Domain Monitor Hub treats those as first-class events and tells you the moment they happen.
DNS changes, detected as events
DNS monitoring watches your A, AAAA, MX, NS and TXT records and fires an alert the instant any of them change. That catches the things that fail silently: a hijack that repoints your domain, an accidental edit during a migration, or an MX/SPF change that quietly breaks mail. Need a one-off look? The free DNS records lookup shows a domain's current records in seconds.
WHOIS changes you can act on
WHOIS monitoring alerts you when the registrar or name servers change, or when a status code like clientHold or pendingTransfer appears — often the first sign of an unauthorized transfer or an account problem. Because it watches from the outside, you're warned even when the registrar itself is the thing that changed.
SSL expiry before the handshake breaks
Certificates are short-lived and renewal fails more often than anyone expects — a broken validation, a new subdomain that isn't covered, a renewal job that silently stopped. SSL monitoring checks daily and warns you well before expiry, and the free SSL checker gives you an instant read on any host's certificate.
Pipe it wherever you already look
Every alert can go out as a webhook — a JSON payload to your endpoint — so you can forward it into your own tooling, an incident channel, or an on-call system. Prefer chat? Discord and Slack are built in on Pro. Notification groups let you route per domain: production domains to a webhook plus a channel, side projects to Email only. It fits your existing workflow instead of adding another dashboard to check.
No agent, no server, no maintenance
There's nothing to deploy or keep running. Add a domain and email alerts start immediately; wire up webhooks or chat only if you want them. It's monitoring for the one layer you can't fix with a redeploy — without becoming one more thing you have to operate.