DNS 4 NOTIMP vs 10 NOTZONE
Both DNS 4 (NOTIMP) and 10 (NOTZONE) belong to the DNS Response Codes (RCODEs) category. 4 indicates that not Implemented. The name server does not support the requested query type or operation. Meanwhile, 10 means that name not contained in zone. A name used in the Prerequisite or Update section is not within the zone denoted by the Zone section.
Description
Not Implemented. The name server does not support the requested query type or operation.
When You See It
You sent a query type (e.g., IXFR, dynamic update) that the server does not support or has disabled.
How to Fix
Verify the server supports the query type you are using. If you need zone transfers or dynamic updates, enable them in the server configuration.
Description
Name not contained in zone. A name used in the Prerequisite or Update section is not within the zone denoted by the Zone section.
When You See It
Your dynamic update tried to modify a record that falls outside the zone specified in the update message (e.g., updating foo.example.org in the example.com zone).
How to Fix
Ensure all names in the update are within the target zone. Check for typos in the zone name or the records being updated.
Key Differences
DNS 4: Not Implemented. The name server does not support the requested query type or operation.
DNS 10: Name not contained in zone. A name used in the Prerequisite or Update section is not within the zone denoted by the Zone section.
You encounter 4 when you sent a query type (e.g., IXFR, dynamic update) that the server does not support or has disabled.
You encounter 10 when your dynamic update tried to modify a record that falls outside the zone specified in the update message (e.g., updating foo.example.org in the example.com zone).
When to Use Which
For 4 (NOTIMP): Verify the server supports the query type you are using. If you need zone transfers or dynamic updates, enable them in the server configuration. For 10 (NOTZONE): Ensure all names in the update are within the target zone. Check for typos in the zone name or the records being updated.