GDPR Compliance

We use cookies to ensure you get the best experience on our website. By continuing to use our site, you accept our use of cookies, privacy policy and terms of service.

Select theme:
star-1
star-2

SOA Lookup.

Retrieve the Start of Authority (SOA) record for any domain to see zone configuration details.

What is an SOA Record? 

The SOA Record defines the global parameters for a DNS zone. It identifies the primary master name server and provides the instructions that secondary servers must follow to keep their records in sync.

Breaking Down the SOA Components:

  1. MNAME (Primary Name Server): The main server that holds the original copy of your DNS records.
  2. RNAME (Responsible Person): The email address of the administrator (note: the @ is replaced by a .).
  3. Serial Number: The version number of your DNS zone. Every time you make a change, this number must increase so secondary servers know to update.
  4. Refresh: How often (in seconds) secondary servers check for updates.
  5. Retry: How long to wait if a refresh attempt fails.
  6. Expire: The point at which a secondary server should stop answering queries if it can't reach the master.
  7. Minimum TTL: This specifically controls negative caching (how long a "This record doesn't exist" answer is remembered).

Frequently asked questions:

  • Why does my domain need an SOA record?

    Every DNS zone must have exactly one SOA record to comply with IETF standards. Without it, your DNS is considered "broken" and won't propagate correctly across the internet.

  • Can I have two SOA records for one domain?

    No. You can have multiple CNAME, TXT, or MX records, but only one SOA record per zone.

  • How does the Serial Number format work?

    Most administrators use a date-based format like YYYYMMDDNN (e.g., 2026032801). This makes it easy to see exactly when the last change was made.

  • Is the SOA record important for SEO?

    Indirectly, yes. If your Minimum TTL is set too high, and you accidentally delete a record, Google will remember that "404/Not Found" error for a very long time, which can hurt your rankings. Proper SOA management ensures high availability.

star-1
star-2
arrow-1

Don’t leave your online presence to chance!

Try UptimeObserver today. Setup in 2 minutes.

Start Monitoring Free Pricing