SOA Lookup
Inspect a domain's SOA (Start of Authority) record: primary nameserver, zone serial, and the refresh, retry, expire and minimum TTL timers. Resolved on Uptimeify's EU servers.
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Frequently asked questions about SOA Lookup
The SOA (Start of Authority) record sits at the top of every DNS zone and holds its administrative settings: the primary (master) nameserver, the hostmaster contact, a serial number that secondary servers use to detect changes, and the refresh, retry, expire and minimum-TTL timers that govern how often secondaries sync and how long negative answers are cached. Exactly one SOA exists per zone.
The serial is a version number for the zone. Every time you edit DNS, the primary nameserver should bump it, and secondary servers compare serials to know when to pull a fresh copy. A common format is the date plus a counter (for example 2026060901). If your change isn't showing up, a serial that didn't increase is a frequent cause.
The query runs on Uptimeify's EU servers, not in your browser, the domain you enter is sent to us only to perform the lookup and is not stored. As an EU-built, EU-hosted provider, Uptimeify keeps this off US infrastructure and clear of US Cloud Act exposure, which matters for agencies handling client data under GDPR.
Ready to Keep Watching Those Zones?
An SOA record tells you who runs the zone. Uptimeify tells you when something inside it changes: records checked on an interval, deviations reported at once.