DNS Report

Health Score: 61%

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Checked: 2 months before


NS records at parent servers [ ]
[These were obtained from]

Glue at parent nameservers 0/7

WARNING The parent servers are not providing glue for all your nameservers. This means that they are supplying the NS records (, but not supplying the A records. That may cause some extra milliseconds in DNS. This will usually occur if your DNS servers are not in the same TLD as your domain


Mismatched glue 0/7

The glue provided by the root servers does not match glue that provided by your authoritative DNS servers.
(	86400	IN	A present at Parent, missing at (
(	3600	IN	A present at (, missing at Parent
(	3600	IN	A present at (, missing at Parent
(	3600	IN	A present at (, missing at Parent
(	3600	IN	A present at (, missing at Parent
(	86400	IN	A present at (, missing at Parent
(	86400	IN	A present at (, missing at Parent
(	86400	IN	A present at (, missing at Parent
(	86400	IN	A present at (, missing at Parent

Nameservers A records 7/7

SUCCESS 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.

Nameservers report identical NS records 0/7

The NS records at your nameservers are different
At ( there are nameservers:
At ( there are nameservers:

Nameservers respond 10/10

SUCCESS All of your nameservers listed at the parent nameservers responded.

Nameserver name validity 7/7

SUCCESS All of the NS records that your nameservers report are valid (no IPs or partial domain names).

Number of nameservers 2/5

WARNING You have 2 nameservers. You must have at least 2 nameservers (RFC2182 section 5 recommends at least 3 nameservers), and preferably no more than 7.

Lame nameservers 7/7

SUCCESS All the nameservers listed at the parent servers answer authoritatively for your domain.

Missing (stealth) nameservers 0/7

DANGER There are nameservers not listed at the parent servers:

Root missing nameservers 7/7

SUCCESS All of the nameservers listed at the parent nameservers are also listed as NS records at your nameservers.

Nameservers on separate class C's 7/7

SUCCESS Nameservers are in a different networks.

public IPs 7/7

SUCCESS All of your NS records appear to use public IPs.


SOA record

SOA record is:
Hostmaster email

Serial agreement 0/7

DANGER Some nameservers have a different soa serial number That can occur because of recent master update (slave have not loaded master zone yet) or the is a problem in DNS.
There is serial 2011120391 at nameserver(s) (
There is serial 2007070100 at nameserver(s) (


SUCCESS SOA (Start of Authority) record states that your master (primary) name server is: That server is listed at the parent servers, which is correct.

Serial value 1/1

SUCCESS SOA serial number is: 2011120391 This 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.

Refresh value 1/1

SUCCESS SOA Retry interval is : 1260 seconds. This seems OK. (Values 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.

Retry value 1/1

SUCCESS SOA Retry interval is : 1800 seconds. This seems OK. (Values 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.

Expire value 0/1

WARNING SOA Expire time is : 2592000 seconds. This seems too big;. (Values 604800 to 2419200 seconds (1-4 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.

TTL value 1/1

SUCCESS SOA Expire time is : 3600 seconds. This seems OK. (about 300 to 86400 seconds or 5 min - 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.


DNS trace

Trace to
lookup at A.ROOT-SERVERS.NET( 6 ms
lookup at 65 ms refer to
lookup at 97 ms
got A record ' IN A' from
Total time: 168 ms