DNS report for proxy.intra.goias.gov.br




ParentpassNS records at parent serversYour NS records at the parent servers are:

ns1.goias.gov.br. [ 200.230.57.20 ]
ns3.goias.gov.br. [ 189.2.188.148 ]
ns2.goias.gov.br. [ 187.5.111.20 ]
ns4.goias.gov.br. [ 177.135.227.218 ]
[These were obtained from c.dns.br.]
passGlue at parent nameserversParent nameservers (I checked with c.dns.br.) know A record for your domain, Very good !
NSinfoNS records at your nameserversYour NS records at your nameservers are:

200.230.57.20 Lame nameserver

189.2.188.148 Lame nameserver

187.5.111.20 Lame nameserver

177.135.227.218 Lame nameserver
passMismatched glueOK. The DNS report did not detect any discrepancies between the glue provided by the parent servers and that provided by your authoritative DNS servers.
passNo NS A records at nameserversOK. Your nameservers do include corresponding A records when asked for your NS records. This ensures that your DNS servers know the A records corresponding to all your NS records.
failAll nameservers report identical NS recordsERROR. The NS records at all your nameservers are different, check the info above for details.
passAll nameservers respondOK. All of your nameservers listed at the parent nameservers responded.
passNameserver name validityOK. All of the NS records that your nameservers report seem valid (no IPs or partial domain names).
passNumber of nameserversOK. You have 4 nameservers. You must have at least 2 nameservers (RFC2182 section 5 recommends at least 3 nameservers), and preferably no more than 7.
failLame nameserversERROR: lame nameservers:

ns1.goias.gov.br. [200.230.57.20]
ns3.goias.gov.br. [189.2.188.148]
ns2.goias.gov.br. [187.5.111.20]
ns4.goias.gov.br. [177.135.227.218]
passMissing (stealth) nameserversOK. All 2 of your nameservers (as reported by your nameservers) are also listed at the parent servers.
passMissing nameservers 2OK. All of the nameservers listed at the parent nameservers are also listed as NS records at your nameservers.
passNameservers on separate class C'sYour nameservers seems to be in different networks.
passAll NS IPs publicOK. All of your NS records appear to use public IPs. If there were any private IPs, they would not be reachable, causing DNS delays.
SOAinfoSOA recordYour SOA record is:
Primary nameserver:
Hostmaster E-mail address:
Serial #:
Refresh:
Retry:
Expire:
Default TTL:
passNS agreement on SOA Serial #OK. All your nameservers agree that your SOA serial number is . That means that all your nameservers are using the same data.
failSOA MNAME CheckERROR: Your SOA (Start of Authority) record states that your master (primary) name server is: That server is not listed at the parent servers, which is not correct.
warnSOA Serial NumberYour SOA serial number is: . This not appears to be in the recommended format of YYYYMMDDnn, where 'nn' is the revision. This number must be incremented every time you make a DNS change.
warnSOA REFRESH valueYour SOA REFRESH interval is : seconds. This seems too small (about 3600-7200 seconds is good if not using DNS NOTIFY; RFC1912 2.2 recommends a value between 1200 to 43200 seconds (20 minutes to 12 hours)). This value determines how often secondary/slave nameservers check with the master for updates.
warnSOA RETRY valueYour SOA RETRY interval is : seconds. This seems too small (about 120-7200 seconds is good). The retry value is the amount of time your secondary/slave nameservers will wait to contact the master nameserver again if the last attempt failed.
warnSOA EXPIRE valueYour SOA EXPIRE time is : seconds. This seems too small (about 1209600 to 2419200 seconds (2-4 weeks) is good). RFC1912 suggests 2-4 weeks. This is how long a secondary/slave nameserver will wait before considering its DNS data stale if it can't reach the primary nameserver.
warnSOA MINIMUM TTL valueYour SOA MINIMUM TTL is : seconds. This seems too small (about 3,600 to 86400 seconds or 1-24 hours is good). RFC2308 suggests a value of 1-3 hours. This value used to determine the default (technically, minimum) TTL (time-to-live) for DNS entries, but now is used for negative caching.

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Checked domains:
hpclab.cs.pu.edu.tw studiovase.it kongenidalen.com colegioesclavasdemaria.org shahreirani.ir brumado.com.py torratorra.com.br quierolatina.com webmail.santiagoecintra.com.br mandirosefanelli.net
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