DNS 3 NXDOMAIN vs 11 DSOTYPENI
Both DNS 3 (NXDOMAIN) and 11 (DSOTYPENI) belong to the DNS Response Codes (RCODEs) category. 3 indicates that non-Existent Domain. The queried domain name does not exist in the DNS namespace. Meanwhile, 11 means that dSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
Descripción
Non-Existent Domain. The queried domain name does not exist in the DNS namespace.
Cuándo lo verás
The domain has no DNS records at all — either it was never registered, has expired, or you have a typo in the hostname.
Cómo solucionarlo
Double-check the domain spelling. If you own the domain, verify your registrar settings and ensure the nameservers are correctly delegated.
Descripción
DSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
Cuándo lo verás
Your client attempted a DSO operation (like a keepalive or push subscription) that the server does not recognize or has not implemented.
Cómo solucionarlo
Verify that both client and server support the same DSO-TYPE. Upgrade the server software or fall back to traditional DNS queries.
Diferencias clave
DNS 3: Non-Existent Domain. The queried domain name does not exist in the DNS namespace.
DNS 11: DSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
You encounter 3 when the domain has no DNS records at all — either it was never registered, has expired, or you have a typo in the hostname.
You encounter 11 when your client attempted a DSO operation (like a keepalive or push subscription) that the server does not recognize or has not implemented.
Cuándo usar cada uno
For 3 (NXDOMAIN): Double-check the domain spelling. If you own the domain, verify your registrar settings and ensure the nameservers are correctly delegated. For 11 (DSOTYPENI): Verify that both client and server support the same DSO-TYPE. Upgrade the server software or fall back to traditional DNS queries.