18.104.22.168.4.1.422.214.171.124 is the OID
for the "Return all operational Attributes
" ("+") as used in LDAP SearchFilters
LDAP Server Implementations supporting this feature SHOULD publish the Object Identifier 126.96.36.199.4.1.4188.8.131.52 as a value of the 'supportedFeatures' RFC 3674 attribute in the root DSE.
There might be more information for this subject on one of the following: