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DNS records do not work as expected, dig shows two different SOAs

Usually means records sit with the registrar but NS records point to a different DNS platform. Both hosts claim authority, only one gets queried.

Try this first

  1. 1Run dig SOA your-domain.com @1.1.1.1 and dig SOA your-domain.com @8.8.8.8. Different serial numbers or name servers back: a mismatch.
  2. 2Check WHOIS for the public NS records of your domain. Those are the servers the whole internet listens to.
  3. 3Compare with where you set records. Your A record at the registrar but NS at Cloudflare? Nobody listens to the registrar records, only to Cloudflare.
  4. 4Pick one DNS platform and put all records (A, MX, TXT, CAA, etc.) there. At the registrar leave only the NS delegation.
  5. 5Wait the TTL before migrating between platforms, or first lower TTL to 300 seconds and wait a day before the switch. Otherwise you see a mix of old and new across resolvers.

When to bring us in

Mismatch in production with mail impact (MX going to the wrong server, mail bouncing): during migration a second pair of eyes saves an hour of panic per hour of solo effort.

See also

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