DNS Monitoring
The records that point the world at your server — watched for the day one quietly changes.
The Layer Nobody Watches
DNS is the phone book of the internet: it turns example.com into the IP address your server
actually lives at, routes your mail to the right place, and proves you own your domain. It works so
invisibly that most people never think about it — until the day a record changes and the whole
thing falls over while the server itself is perfectly healthy.
That's the maddening part. Your box is up, the service is running, every light is green — and the site is unreachable for the world anyway, because the DNS record that points people to you is wrong, missing, or pointing somewhere it shouldn't. No server alert will ever catch that, because nothing is wrong with the server.
What Actually Goes Wrong
- Someone edits a record — an
Arecord repointed during a migration and never changed back, aCNAMEaimed at a host that no longer exists. - A record gets deleted — the classic "we cleaned up the DNS zone" that quietly takes a subdomain offline.
- An
MXrecord breaks and email silently stops arriving — the kind of outage you discover days later when someone asks why you never replied. - Your registrar or DNS provider has a problem of their own, and suddenly your domain resolves for no one.
DNS lies depending on where and when you ask
Records are cached all over the internet for as long as their TTL says. So a change can look perfectly fine from your machine — you've got the old cached answer — while half the world already sees the broken new one, or the other way around. Checking from a single place tells you almost nothing.
What CleverUptime Watches
CleverUptime queries the DNS records for your domains from more than one place, on a schedule, and tells you when something changes: a record that disappeared, an answer that suddenly points somewhere new, or a name that stops resolving altogether. You don't set any of it up — it picks up the domains your server serves and starts watching the records that matter.
The point isn't a wall of green checkmarks — it's catching the change you didn't make on
purpose, before it turns into "why has our mail been down since Tuesday?" If you want to inspect your
own records by hand in the meantime, host and
nslookup are the tools, and the
DNS troubleshooting guide walks through the usual suspects.
Part of the Whole Picture
DNS sits inside the larger question of whether your domain is healthy — see domain monitoring for the umbrella view, and uptime monitoring for whether the site answers once DNS points somewhere. When several of these go wrong at once, root-cause analysis ties them into one story instead of three separate alarms.
Sure your DNS is fine — but is it fine from everywhere, right now?
CleverUptime watches your domain's records from more than one place and tells you the moment one changes out from under you.