selodaalegria.com.br DNS Report

Health Score: 85%

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Checked: 5 days before

Parent

NS records at parent servers

ns1.sherwin.com
ns2.sherwin.com
ns3.level3.net
ns4.level3.net
[These were obtained from a.dns.br.]

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 sherwin.com Check level3.net

Nameservers A records 0/7

Some servers does not provide A records for nameservers.
missing A record(s) for (ns1.sherwin.com,ns2.sherwin.com,ns3.level3.net,ns4.level3.net) at nameserver 148.141.15.252
missing A record(s) for (ns3.level3.net,ns1.sherwin.com,ns4.level3.net,ns2.sherwin.com) at nameserver 148.141.15.253
missing A record(s) for (ns3.level3.net,ns4.level3.net) at nameserver 216.136.95.12
missing A record(s) for (ns3.level3.net,ns4.level3.net) at nameserver 64.132.94.251

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 5/5

SUCCESS 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.

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
hostmaster.sherwin.com
Serial
2018081307
Refresh
14400
Retry
3600
Expire
2592000
TTL
14400

Serial agreement 7/7

SUCCESS All your nameservers agree that your SOA serial number is 2018081307 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: ns1.sherwin.com That server is listed at the parent servers, which is correct.

Serial value 1/1

SUCCESS SOA serial number is: 2018081307 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 : 14400 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 : 3600 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 : 14400 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 selodaalegria.com.br
lookup selodaalegria.com.br at A.ROOT-SERVERS.NET(198.41.0.4) 10 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to a.dns.br(200.160.0.10)
lookup selodaalegria.com.br at a.dns.br(200.160.0.10) 111 ms
a.dns.br(200.160.0.10) refer to ns4.level3.net(unknow IP)
extra IP lookup for ns4.level3.net at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns4.level3.net at A.ROOT-SERVERS.NET(198.41.0.4) 9 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to e.gtld-servers.net(192.12.94.30)
lookup ns4.level3.net at e.gtld-servers.net(192.12.94.30) 9 ms
e.gtld-servers.net(192.12.94.30) refer to ns1.l3.net(209.244.0.1)
lookup ns4.level3.net at ns1.l3.net(209.244.0.1) 3 ms
lookup selodaalegria.com.br at ns4.level3.net() 3 ms
ns4.level3.net() refer to E.ROOT-SERVERS.NET(unknow IP)
extra IP lookup for E.ROOT-SERVERS.NET at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup E.ROOT-SERVERS.NET at A.ROOT-SERVERS.NET(198.41.0.4) 9 ms
got A record 'E.ROOT-SERVERS.NET IN A 192.203.230.10' from E.ROOT-SERVERS.NET(198.41.0.4)
lookup selodaalegria.com.br at E.ROOT-SERVERS.NET(192.203.230.10) 3 ms
E.ROOT-SERVERS.NET(192.203.230.10) refer to a.dns.br(200.160.0.10)
lookup selodaalegria.com.br at a.dns.br(200.160.0.10) 110 ms
a.dns.br(200.160.0.10) refer to ns4.level3.net(unknow IP)
extra IP lookup for ns4.level3.net at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns4.level3.net at A.ROOT-SERVERS.NET(198.41.0.4) 9 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to e.gtld-servers.net(192.12.94.30)
lookup ns4.level3.net at e.gtld-servers.net(192.12.94.30) 9 ms
e.gtld-servers.net(192.12.94.30) refer to ns1.l3.net(209.244.0.1)
lookup ns4.level3.net at ns1.l3.net(209.244.0.1) 2 ms
lookup selodaalegria.com.br at ns4.level3.net() 3 ms
ns4.level3.net() refer to B.ROOT-SERVERS.NET(unknow IP)
extra IP lookup for B.ROOT-SERVERS.NET at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup B.ROOT-SERVERS.NET at A.ROOT-SERVERS.NET(198.41.0.4) 10 ms
got A record 'B.ROOT-SERVERS.NET IN A 199.9.14.201' from B.ROOT-SERVERS.NET(198.41.0.4)
lookup selodaalegria.com.br at B.ROOT-SERVERS.NET(199.9.14.201) 74 ms
B.ROOT-SERVERS.NET(199.9.14.201) refer to b.dns.br(200.189.41.10)
lookup selodaalegria.com.br at b.dns.br(200.189.41.10) 70 ms
b.dns.br(200.189.41.10) refer to ns4.level3.net(unknow IP)
extra IP lookup for ns4.level3.net at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns4.level3.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 ns4.level3.net at a.gtld-servers.net(192.5.6.30) 22 ms
a.gtld-servers.net(192.5.6.30) refer to ns1.l3.net(209.244.0.1)
lookup ns4.level3.net at ns1.l3.net(209.244.0.1) 2 ms
lookup selodaalegria.com.br at ns4.level3.net() 3 ms
ns4.level3.net() refer to L.ROOT-SERVERS.NET(unknow IP)
extra IP lookup for L.ROOT-SERVERS.NET at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup L.ROOT-SERVERS.NET at A.ROOT-SERVERS.NET(198.41.0.4) 10 ms
got A record 'L.ROOT-SERVERS.NET IN A 199.7.83.42' from L.ROOT-SERVERS.NET(198.41.0.4)
lookup selodaalegria.com.br at L.ROOT-SERVERS.NET(199.7.83.42) 8 ms
L.ROOT-SERVERS.NET(199.7.83.42) refer to a.dns.br(200.160.0.10)
lookup selodaalegria.com.br at a.dns.br(200.160.0.10) 111 ms
a.dns.br(200.160.0.10) refer to ns4.level3.net(unknow IP)
extra IP lookup for ns4.level3.net at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns4.level3.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 ns4.level3.net at a.gtld-servers.net(192.5.6.30) 22 ms
a.gtld-servers.net(192.5.6.30) refer to ns1.l3.net(209.244.0.1)
lookup ns4.level3.net at ns1.l3.net(209.244.0.1) 3 ms
lookup selodaalegria.com.br at ns4.level3.net() 5 ms
ns4.level3.net() refer to J.ROOT-SERVERS.NET(unknow IP)
extra IP lookup for J.ROOT-SERVERS.NET at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup J.ROOT-SERVERS.NET at A.ROOT-SERVERS.NET(198.41.0.4) 10 ms
got A record 'J.ROOT-SERVERS.NET IN A 192.58.128.30' from J.ROOT-SERVERS.NET(198.41.0.4)
lookup selodaalegria.com.br at J.ROOT-SERVERS.NET(192.58.128.30) 265 ms
J.ROOT-SERVERS.NET(192.58.128.30) refer to a.dns.br(200.160.0.10)
lookup selodaalegria.com.br at a.dns.br(200.160.0.10) 111 ms
a.dns.br(200.160.0.10) refer to ns4.level3.net(unknow IP)
extra IP lookup for ns4.level3.net at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns4.level3.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 ns4.level3.net at a.gtld-servers.net(192.5.6.30) 21 ms
a.gtld-servers.net(192.5.6.30) refer to ns1.l3.net(209.244.0.1)
lookup ns4.level3.net at ns1.l3.net(209.244.0.1) 2 ms
lookup selodaalegria.com.br at ns4.level3.net() 3 ms
ns4.level3.net() refer to A.ROOT-SERVERS.NET(unknow IP)
extra IP lookup for A.ROOT-SERVERS.NET at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup A.ROOT-SERVERS.NET at A.ROOT-SERVERS.NET(198.41.0.4) 9 ms
got A record 'A.ROOT-SERVERS.NET IN A 198.41.0.4' from A.ROOT-SERVERS.NET(198.41.0.4)
lookup selodaalegria.com.br at A.ROOT-SERVERS.NET(198.41.0.4) 9 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to f.dns.br(200.219.159.10)
lookup selodaalegria.com.br at f.dns.br(200.219.159.10) 189 ms
f.dns.br(200.219.159.10) refer to ns1.sherwin.com(unknow IP)
extra IP lookup for ns1.sherwin.com at root server A.ROOT-SERVERS.NET(198.41.0.4)
lookup ns1.sherwin.com at A.ROOT-SERVERS.NET(198.41.0.4) 9 ms
A.ROOT-SERVERS.NET(198.41.0.4) refer to e.gtld-servers.net(192.12.94.30)
lookup ns1.sherwin.com at e.gtld-servers.net(192.12.94.30) 9 ms
e.gtld-servers.net(192.12.94.30) refer to ns1.sherwin.com(148.141.15.252)
lookup ns1.sherwin.com at ns1.sherwin.com(148.141.15.252) 31 ms
got A record 'ns1.sherwin.com IN A 148.141.15.252' from ns1.sherwin.com(148.141.15.252)
lookup selodaalegria.com.br at ns1.sherwin.com(148.141.15.252) 36 ms
got A record 'selodaalegria.com.br IN A 148.141.109.50' from selodaalegria.com.br(148.141.15.252)
Total time: 1364 ms