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0

NoError

No Error

Core RCODERFC 1035

NoError (0) means the DNS query was processed successfully with no error. The response may include answer records (NOERROR with answers), or it may be an authoritative empty response indicating the name exists but has no records of the requested type (NOERROR/NODATA). NoError does not guarantee records were found – only that no error occurred.

RCODE

0

Name

NoError

Standard

RFC 1035

Description

NOERROR is returned when the DNS server successfully processed the query. There are two distinct cases: NOERROR with answer records (the query was answered), and NOERROR with an empty answer section (NODATA – the domain exists but has no records of the requested type). A query for AAAA records of a domain that only has A records returns NOERROR with an empty answer section. This is an important distinction from NXDOMAIN (3) which means the name itself does not exist.

Common Causes

  • –Successful DNS query with matching records returned
  • –Domain exists but has no records of the requested type (NODATA)
  • –Wildcard match returning synthesized records
RFC 1035 – DNS RCODE specification →