ProblemCode POINTSShort Description
PROBLEM_MNAME_DOESNT_RESOLVE20 ERROR (20 points): Could not look up an IP address for the mname (primary nameserver) ns1.example.com listed in the SOA record at this server.
PROBLEM_COULDNT_LOOKUP_NS_ADDRESS20 ERROR (20 points): Could not look up an IP address for nameserver ns1.example.com found in the submitted domain object.
PROBLEM_MULTIPLE_SOA_AT_SERVER20 ERROR (20 points): The server at ns1.example.com (192.0.4.1) returns multiple SOA records.
PROBLEM_NO_SOA_AT_SERVER20 ERROR (20 points): Could not get an SOA record from ns1.example.com (192.0.4.1).
PROBLEM_DUPLICATE_DELEGATED_NS_NAME20 ERROR (20 points): The nameserver name ns1.example.com appears more than once in the submitted domain object.
PROBLEM_DUPLICATE_NS_NAME_LISTED_AT_ZONE20 ERROR (20 points): The nameserver name ns2.example.com was listed more than once in this zone at ns1.example.com (192.0.4.1).
PROBLEM_DUPLICATE_DELEGATED_NS_IP20 ERROR (20 points): The IP address 192.0.4.1 is identical for the nameserver(s) ns1.example.com ns2.example.com found in the submitted domain object.
PROBLEM_TOO_FEW_DELEGATED_NAMESERVERS20 ERROR (20 points): At least 3 nameservers are required for each properly delegated zone. Only 2 was found in your submission.
PROBLEM_DOMAIN_NAME_TOO_LONG20 ERROR (20 points): The domain name someverylongname of is too long. It is 265 octets compared to the maximum of 255 octets permitted by RFC 2181, section 11.
PROBLEM_DOMAIN_NAME_LABEL_TOO_LONG20 ERROR (20 points): The label in the domain name of is too long. It is octets, the maximum is octets. A domain name is formed by labels separated by dots. The maximum length of such a label is 63 octets, specified in RFC 2181, section 11.
PROBLEM_DOMAIN_NAME_LABEL_EMPTY20 ERROR (20 points): The domain name of contains zero length labels. A domain name is formed by labels separated by dots. The minimum length of such a label is 1 octet, as specified in RFC 2181, section 11.
PROBLEM_HOSTNAME_LABEL_ILLEGAL_CHARACTERS20 ERROR (20 points): The label in the hostname of contains illegal characters. A hostname label must consist of the characters A-Z, a-z, 0-9 or '-'. Please see RFC 1912, section 2.1, for more information on hostname restrictions.
PROBLEM_HOSTNAME_ONE_LABEL20 ERROR (20 points): The hostname of only has one label. A domain name is formed by labels separated by dots.
PROBLEM_HOSTNAME_LABEL_ILLEGAL_START_OR_END20 ERROR (20 points): The label in the hostname of does not start and end with a letter or digit. Please see RFC 1912, section 2.1, for more information on hostname restrictions.
PROBLEM_NON_AA_NAMESERVER20 ERROR (20 points): The delegated nameserver () returned non-authoritative records for the zone.
PROBLEM_SERIAL_NUMBERS_DIFFER20 ERROR (20 points): Found differing serial numbers in the SOA records returned for the zone at the nameservers: () : () :
PROBLEM_SOA_VALUES_DIFFER20 ERROR (20 points): Found differing values in the SOA records returned for the zone at () and (). The following values were different:
PROBLEM_NS_NAME_NOT_CANONICAL20 ERROR (20 points): The delegated nameserver name is not canonical.
PROBLEM_SOA_RECORD_FIELD_EMPTY20 ERROR (20 points): The field in the SOA record returned by this nameserver was undefined or empty. This field should always have a value.
PROBLEM_RNAME_DUPLICATE_ZONE20 ERROR (20 points): The rname (e-mail contact) field in the SOA record returned from this nameserver contains the zone name twice. This probably results from a missing '.' on the end of the rname in the master zone file.
PROBLEM_RNAME_HAS_AT_SIGN20 ERROR (20 points): The rname (e-mail contact) field in the SOA record returned from this nameserver contains an '@' sign. Please see RFC 1912, section 2.2 for more information on the rname field.
PROBLEM_RNAME_BAD_SYNTAX20 ERROR (20 points): The rname (e-mail contact) field in the SOA record returned by this server is syntactically incorrect.
PROBLEM_SERIAL_CONTAINS_NON_NUMERIC20 ERROR (20 points): The serial number in the SOA record returned by this server is not all numeric digits (0-9).
PROBLEM_SERIAL_IN_FUTURE20 ERROR (20 points): The serial number in the SOA record returned by this server is a time in the future.
PROBLEM_EXPIRE_LESS_THAN_REFRESH20 ERROR (20 points): The expire value in the SOA record returned by this nameserver is less than the refresh value in the same record.
PROBLEM_INCONSISTENT_NS_LISTING20 ERROR (20 points): Nameserver is listed at: (), but not at: (). All nameservers should have a consistent set of nameservers listed for the zone.
PROBLEM_LISTED_NAMESERVER_NOT_IN_DELEGATED_LIST20 ERROR (20 points): The nameserver was found listed for the zone at (), but was not one of the delegated nameservers ().
PROBLEM_DELEGATED_NS_NOT_LISTED_AT_ZONE20 ERROR (20 points): The submitted nameserver is not listed for the zone by the nameserver at ().
PROBLEM_BAD_IP20 ERROR (20 points): The checker returned the IP address for . This is syntactically bad and unusable.
PROBLEM_UNUSABLE_IP20 ERROR (20 points): The checker returned the IP address for . This is unusable as a nameserver IP because .
PROBLEM_UNUSABLE_HOSTNAME20 ERROR (20 points): The hostname of is unusable.
PROBLEM_BAD_PORT20 ERROR (20 points): Port was specified for (). This is syntactically invalid and unusable.
PROBLEM_REQUIRED_NAMESERVER_MISSING20 ERROR (20 points): The RIPE NCC nameserver was not present in the submitted list of delegated nameservers for this zone. This is required by the RIPE NCC for this type/size of zone.
PROBLEM_PROHIBITED_NAMESERVER_PRESENT20 ERROR (20 points): The nameserver is present in the submitted list of delegated nameservers for this zone (). The RIPE NCC does not run secondary for zones of this type/size.
PROBLEM_REVERSE_DOMAIN_IN_RNAME2 WARNING (2 points): The rname (e-mail contact) field in the SOA record returned by this server is in a reverse domain (in-addr.arpa, ip6.int or ip6.arpa).
PROBLEM_NO_REVERSE_MAPPING4 WARNING (4 points): Could not find a PTR record mapping to . For every IP address there should be a matching PTR record registered Please see RFC1912, section 2.1 for more information.
PROBLEM_WRONG_REVERSE_MAPPING4 WARNING (4 points): None of the PTR records found for mapped back to . For every IP address there should be a matching PTR record registered Please see RFC1912, section 2.1 for more information.
PROBLEM_EXPIRE_LESS_THAN_REFRESH_RETRY_SUM7 WARNING (7 points): The expire value in the SOA record returned by this nameserver is less than the sum of the refresh () and retry () values in the same record.
PROBLEM_MNAME_NOT_LISTED_AS_NS0 INFO: The mname (primary nameserver) in the SOA record listed at this server is not in the list of servers at this nameserver ().
PROBLEM_SERIAL_NOT_RECOMMENDED_FORMAT0 INFO: The serial number in the SOA record returned by this server is not in the recommended YYYYMMDDnn format.
PROBLEM_REFRESH_OUT_OF_RANGE0 INFO: The refresh value () in the SOA record returned by this nameserver is not within the recommended range. RFC 1912 recommends 20 minutes to 12 hours for this value.
PROBLEM_RETRY_OUT_OF_RANGE0 INFO: The retry value () in the SOA record returned by this nameserver is not within the recommended range. RFC 1912 recommends a fraction of the refresh for this value. We have interpreted this as to of the refresh.
PROBLEM_EXPIRE_OUT_OF_RANGE0 INFO: The expire value () in the SOA record returned by this nameserver is not within the suggested range. RFC 1912 recommends between two and four weeks for this value.
PROBLEM_MINIMUM_OUT_OF_RANGE0 INFO: The minimum value () in the SOA record returned by this nameserver is not within the suggested range. RFC 1912 suggests 1-5 days as typical values.
PROBLEM_DELEGATED_NS_ON_SAME_SUBNET0 INFO: The delegated nameservers () and () may be on the same subnet.
PROBLEM_LOOKUP0 INFO: The checker encountered an error when looking up records for the name at :
PROBLEM_SKIPPED_SERIAL_NUMBER0 INFO: Several tests were skipped for one of more servers having the version of the zone with serial number , which had already been checked.