www.tcfsh2017gra.xyz DNS Report

Health Score: 80%

Need help fixing DNS ? Get an expert advise at support forum

Checked: 10 months before

Parent

NS records at parent servers

ns.tcfsh2017gra.xyz [ 140.118.74.34 ]
[These were obtained from ns-195-b.gandi.net.]

Glue at parent nameservers 7/7

SUCCESS Parent nameservers know A records for your domain, Very good !

NS

Mismatched glue 0/7

The glue provided by the root servers does not match glue that provided by your authoritative DNS servers.
(ns.tcfsh2017gra.xyz.	1800	IN	A	140.118.74.34) present at Parent, missing at (140.118.74.34)

Nameservers A records 0/7

Some servers does not provide A records for nameservers.
missing A record(s) for (ns.tcfsh2017gra.xyz) at nameserver 140.118.74.34

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 0/5

DANGER You have less then 2 nameservers, that may cause downtime

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
hi.limao.me
Serial
20
Refresh
10800
Retry
900
Expire
604800
TTL
1600

Serial agreement 7/7

SUCCESS All your nameservers agree that your SOA serial number is 20 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: ns.tcfsh2017gra.xyz That server is listed at the parent servers, which is correct.

Serial value 0/1

WARNING SOA serial number is: 20 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 1/1

SUCCESS SOA Retry interval is : 10800 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 : 900 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 : 1600 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 www.tcfsh2017gra.xyz
lookup www.tcfsh2017gra.xyz at A.ROOT-SERVERS.NET(198.41.0.4) 4 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to x.nic.xyz(194.169.218.42)
lookup www.tcfsh2017gra.xyz at x.nic.xyz(194.169.218.42) 86 ms
x.nic.xyz(194.169.218.42) refer to ns-127-a.gandi.net(unknow IP)
extra IP lookup for ns-127-a.gandi.net at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns-127-a.gandi.net 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 ns-127-a.gandi.net at a.gtld-servers.net(192.5.6.30) 5 ms
a.gtld-servers.net(192.5.6.30) refer to dns0.gandi.net(217.70.177.39)
lookup ns-127-a.gandi.net at dns0.gandi.net(217.70.177.39) 76 ms
got A record 'ns-127-a.gandi.net IN A 173.246.98.2' from ns-127-a.gandi.net(217.70.177.39)
lookup www.tcfsh2017gra.xyz at ns-127-a.gandi.net(173.246.98.2) 74 ms
ns-127-a.gandi.net(173.246.98.2) refer to ns.tcfsh2017gra.xyz(140.118.74.34)
lookup www.tcfsh2017gra.xyz at ns.tcfsh2017gra.xyz(140.118.74.34) 200 ms
got A record 'www.tcfsh2017gra.xyz IN A 140.118.56.80' from www.tcfsh2017gra.xyz(140.118.74.34)
Total time: 455 ms