metallprofil.by DNS Report

Health Score: 83%

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Checked: 3 months before

Parent

NS records at parent servers

u1.hoster.by
u2.hoster.by
[These were obtained from dns1.tld.tutby.com.]

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 hoster.by

Nameservers A records 0/7

Some servers does not provide A records for nameservers.
missing A record(s) for (u1.hoster.by,u2.hoster.by) at nameserver 93.125.30.201
missing A record(s) for (u2.hoster.by,u1.hoster.by) at nameserver 178.172.236.142

Nameservers report identical NS records 7/7

SUCCESS The NS records at all your nameservers are identical.

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 7/7

SUCCESS All your nameservers are also 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

SOA record

SOA record is:
Hostmaster email
support.hoster.by
Serial
2018052403
Refresh
43200
Retry
7200
Expire
604800
TTL
600

Serial agreement 7/7

SUCCESS All your nameservers agree that your SOA serial number is 2018052403 That means that all your nameservers are using the same data.

SOA MNAME 3/3

SUCCESS SOA (Start of Authority) record states that your master (primary) name server is: u1.hoster.by That server is listed at the parent servers, which is correct.

Serial value 1/1

SUCCESS SOA serial number is: 2018052403 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 : 43200 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 : 7200 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 1/1

SUCCESS SOA Expire time is : 604800 seconds. This seems OK. (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 : 600 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.

Info

DNS trace

Trace to metallprofil.by
lookup metallprofil.by at A.ROOT-SERVERS.NET(198.41.0.4) 9 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to dns4.tld.tutby.com(62.212.73.101)
lookup metallprofil.by at dns4.tld.tutby.com(62.212.73.101) 98 ms
dns4.tld.tutby.com(62.212.73.101) refer to u1.hoster.by(unknow IP)
extra IP lookup for u1.hoster.by at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup u1.hoster.by at A.ROOT-SERVERS.NET(198.41.0.4) 11 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to dns4.tld.tutby.com(62.212.73.101)
lookup u1.hoster.by at dns4.tld.tutby.com(62.212.73.101) 101 ms
dns4.tld.tutby.com(62.212.73.101) refer to ns1.hosterby.com(unknow IP)
extra IP lookup for ns1.hosterby.com at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns1.hosterby.com at A.ROOT-SERVERS.NET(198.41.0.4) 10 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to a.gtld-servers.net(192.5.6.30)
lookup ns1.hosterby.com at a.gtld-servers.net(192.5.6.30) 21 ms
a.gtld-servers.net(192.5.6.30) refer to ns1.hosterby.com(93.125.31.240)
lookup ns1.hosterby.com at ns1.hosterby.com(93.125.31.240) 130 ms
got A record 'ns1.hosterby.com IN A 93.125.31.240' from ns1.hosterby.com(93.125.31.240)
lookup u1.hoster.by at ns1.hosterby.com(93.125.31.240) 130 ms
got A record 'u1.hoster.by IN A 93.125.30.201' from u1.hoster.by(93.125.31.240)
lookup metallprofil.by at u1.hoster.by(93.125.30.201) 130 ms
got A record 'metallprofil.by IN A 95.47.99.31' from metallprofil.by(93.125.30.201)
Total time: 640 ms