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C21idc.com DNS Tests

  
TLD ▼  |  Name Servers ▼  |  A Records ▼  |  Speed and Health ▼  |  AAAA Records ▼  |  MX Records ▼  |  SOA Record ▼
Top Level Domain

INFO
Using Root Server e.root-servers.net
PASS
Your TLD is recognized at the root servers.
INFO
Got redirected to a.gtld-servers.net
INFO
Got redirected to ns1.speedydns.net
PASS
You have 2 name servers. Anything more than 1 is good.

Name Servers

INFO
Name Server (NS) records at the TLD name server a.gtld-servers.net:

ns1.speedydns.net
ns2.speedydns.net
PASS
The TLD name server a.gtld-servers.net sent A records (GLUE) for the name servers of c21idc.com in the additional section of the response. This speeds up the computation by avoiding an additional DNS query for the A records of the name servers.
INFO
ns1.speedydns.net has the following A Records:

208.43.81.114, located at Dallas, United States
INFO
ns2.speedydns.net has the following A Records:

50.22.35.226, located at Dallas, United States
PASS
All of your name servers have A records.
PASS
All of your name servers are on seperate IP addresses.
INFO
The A records of your name servers indicate that your name servers are not geo distributed. It is recommended that your name servers be in different geographical locations to ensure the best availability.
PASS
Your name server ns1.speedydns.net is responding to DNS queries.
WARNING
Name Servers Found at ns1.speedydns.net for c21idc.com NOT found at a.gtld-servers.net:

ns3.speedydns.net
WARNING
Your name server ns1.speedydns.net is responding with a different set of NS records as compared to the TLD server a.gtld-servers.net!
PASS
Name server ns1.speedydns.net sent A records (GLUE) along with the response for the NS records query for c21idc.com.
PASS
Your name server ns2.speedydns.net is responding to DNS queries.
WARNING
Name Servers Found at ns2.speedydns.net for c21idc.com NOT found at a.gtld-servers.net:

ns3.speedydns.net
WARNING
Your name server ns2.speedydns.net is responding with a different set of NS records as compared to the TLD server a.gtld-servers.net!
PASS
Name server ns2.speedydns.net sent A records (GLUE) along with the response for the NS records query for c21idc.com.
WARNING
The NS records returned by your name servers are not consistent with either the TLD server a.gtld-servers.net or some of your other name servers. See above. The reason for this could be that you have different name servers at your domain name registrar as compared to your NS records. Even if this could be ok, you should always have the same name servers at your registrar and at your NS records.
PASS
Your name server ns1.speedydns.net is authoritative for the domain name c21idc.com.
PASS
Your name server ns2.speedydns.net is authoritative for the domain name c21idc.com.
WARNING
The SOA record serial number differs between your name servers! This is not expected unless you have recently created your domain name or name servers and the data has not propagated to all your servers yet. Please check after a few hours and then if this test fails again, you need to fix it.
PASS
None of your name servers seem to allow recursive queries.

A Records

INFO
c21idc.com has the following A Records:

174.136.13.32 (TTL: 86400 seconds) is located at Dallas, United States
INFO
The WWW record for c21idc.com (www.c21idc.com) is a CNAME Record. An A record is recommended. The CNAME for www.c21idc.com points to c21idc.com which points to 174.136.13.32. One level of indirection is OK, but not recommended.

AAAA Records

INFO
There are no AAAA records for your domain name at ns2.speedydns.net.

SOA Record

INFO
SOA Record:

Serial: 2018061216
Refresh: 3600 seconds
Retry: 7200 seconds
Expire: 1209600 seconds
Minimum TTL: 86400 seconds
Primary Name Server: ns1.speedydns.net
Contact: root.localhost
PASS
Your SOA Refresh value 3600 is OK. The recommended value is between 1200 and 86400.
PASS
Your SOA Retry value 7200 is OK. The recommended value is between 120 and 7200.
PASS
Your SOA Expire value 1209600 is OK. The recommended value is between 604800 and 2419200.
PASS
Your SOA Minimum TTL value 86400 is OK. The recommended value is between 1800 and 86400.
PASS
The primary name server in the SOA record (ns1.speedydns.net) is sent by the TLD name server a.gtld-servers.net for queries on c21idc.com.

MX Records

INFO
c21idc.com has the following MX records:

c21idc.com
PASS
Your name servers sent A Records (GLUE) for your mail servers for MX queries. This speeds up the DNS lookups.
INFO
Mail Server c21idc.com has the following A Records:

174.136.13.32, located at Dallas, United States.
PASS
All of your MX servers have A records.
PASS
All of your MX records are on different IP addresses. This is the recommended way of creating A Records for MX servers.
WARNING
You have only 1 MX Record for c21idc.com. At least 2 is recommended.
PASS
Your domain name has an SPF record (v=spf1 +a +mx +ip4:143.95.147.197 +include:websitewelcome.com ~all). This prevents email spoofing.

Name Server Speed and Health

PASS
After 9 lookups, the average response time of your name server ns1.speedydns.net is 83.36 milliseconds:

Los Angeles:62.53 ms
Dallas:34.55 ms
New York:8.11 ms
Singapore:242.73 ms
London:77.08 ms
Amsterdam:83.77 ms
San Francisco:74.78 ms
INFO
Health: Across all queries that we sent to ns1.speedydns.net, the success rate is 99.77% (uptime).
PASS
After 11 lookups, the average response time of your name server ns2.speedydns.net is 84.22 milliseconds:

Los Angeles:35.49 ms
Dallas:2.36 ms
New York:45.83 ms
Singapore:240.54 ms
London:114.6 ms
Amsterdam:111.97 ms
San Francisco:38.72 ms
INFO
Health: Across all queries that we sent to ns2.speedydns.net, the success rate is 99.02% (uptime).

DNS Rating

A-
Rating by SolveDNS
c21idc.com DNS tests had 0 failed tests and 7 warnings.

76.67% out of 100



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