glasgoweastbusinessclub.co.uk DNS Report

Health Score: 47%

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Checked: 1 week before

Parent

NS records at parent servers

ns50.3v0.net
ns49.3v0.net
[These were obtained from nsa.nic.uk.]

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 (host.example.com), 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

NS

Mismatched glue 7/7

Skip glue checking. Make sure the nameservers domain is good standing Check 3v0.net

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 (162.243.97.91) there are nameservers:
At (185.11.240.142) there are nameservers: ns4.3v0.net. ns2.3v0.net. ns3.3v0.net. ns1.3v0.net.

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 0/7

Lame nameservers:
162.243.97.91

Missing (stealth) nameservers 0/7

DANGER There are nameservers not listed at the parent servers:
ns4.3v0.net.
ns2.3v0.net.
ns3.3v0.net.
ns1.3v0.net.

Root missing nameservers 0/7

DANGER There are nameservers not listed at your nameservers:
ns50.3v0.net.
ns49.3v0.net.

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

SOA record

SOA record is:
Hostmaster email
Serial
Refresh
Retry
Expire
TTL

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 at nameserver(s) (162.243.97.91)
There is serial 2016072112 at nameserver(s) (185.11.240.142)

SOA MNAME 0/3

DANGER SOA (Start of Authority) record states that your master (primary) name server is: , but that server is not listed at the parent servers.

Serial value 0/1

WARNING 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.

Refresh value 0/1

WARNING SOA Retry interval is : seconds. This seems too small. (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 0/1

WARNING SOA Retry interval is : seconds. This seems too small. (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 : seconds. This seems too small. (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 0/1

WARNING SOA Expire time is : seconds. This seems too small. (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.

Info

DNS trace

Trace to glasgoweastbusinessclub.co.uk
lookup glasgoweastbusinessclub.co.uk at A.ROOT-SERVERS.NET(198.41.0.4) 6 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to nsa.nic.uk(156.154.100.3)
lookup glasgoweastbusinessclub.co.uk at nsa.nic.uk(156.154.100.3) 5 ms
nsa.nic.uk(156.154.100.3) refer to ns49.3v0.net(unknow IP)
extra IP lookup for ns49.3v0.net at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns49.3v0.net at A.ROOT-SERVERS.NET(198.41.0.4) 6 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to e.gtld-servers.net(192.12.94.30)
lookup ns49.3v0.net at e.gtld-servers.net(192.12.94.30) 43 ms
e.gtld-servers.net(192.12.94.30) refer to ns1.3v0.net(185.11.240.142)
lookup ns49.3v0.net at ns1.3v0.net(185.11.240.142) 76 ms
got A record 'ns49.3v0.net IN A 185.11.240.142' from ns49.3v0.net(185.11.240.142)
lookup glasgoweastbusinessclub.co.uk at ns49.3v0.net(185.11.240.142) 83 ms
got A record 'glasgoweastbusinessclub.co.uk IN A 185.11.240.190' from glasgoweastbusinessclub.co.uk(185.11.240.142)
Total time: 219 ms