Home/Notes/A practical look at DNS TTL for a dental office
A practical look at DNS TTL for a dental office
13 Jan 2026
How a dental office deals with DNS TTL — and what usually goes wrong.
The problem: a backup that was never restored as a drill. This is where DNS TTL breaks for a dental office.
We underestimated how long DNS TTL migration would take for a dental office. The estimate was two hours; the reality was a full day because a backup that was never restored as a drill had never been documented.
We billed a dental office two hours for DNS TTL. The previous agency billed forty hours and left a backup that was never restored as a drill behind. Complexity is not expertise.
Six months later, a dental office asked us to look at something unrelated. While we were in the panel, we noticed a backup that was never restored as a drill had crept back. We fixed it before it caused trouble.
a dental office did not need a portal. They needed a page that said who they are, what they do, and a phone number that somebody picks up before the fifth ring.
Most providers let you export DNS TTL as a zone file. We keep one in version control for every client. If the hosting vanishes, the zone file rebuilds the domain in minutes.
We check DNS TTL for a dental office once a quarter. It takes five minutes and has caught two problems in the past year. Both would have caused downtime within a week.
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