Knowledge Base

How To Troubleshoot Nameserver Errors

Incorrect nameserver records can cause a number of errors in DNS. Web based tools can be used to theck the state of DNS for a domain. This article will show some errors you might see and steps to correct them.

Missing nameservers reported by parent

New accounts and added domains on A2 Hosting shared servers are set up with four nameserver records by default. Nameserver records are also set up at the registrar of a domain. If the nameserver records at the registrar do not list all four records then DNS checkers will report the error Missing nameservers reported by parent If you visit the control panel for the server and the registrar, they may look something like this.

Server Record Registrar Record
example.com. 86400 IN NS ns1.a2hosting.com.
example.com. 86400 IN NS ns2.a2hosting.com.
example.com. 86400 IN NS ns3.a2hosting.com.
example.com. 86400 IN NS ns4.a2hosting.com.
Nameserver 1: ns3.a2hosting.com
Nameserver 2: ns4.a2hosting.com
Nameserver 3: 
Nameserver 4:

To correct the error, add the missing nameservers to the registrar record.

SOA MNAME entry

One nameserver record is used in the SOA (Start Of Authority) record for the domain. If that nameserver is not listed in the registrar record then a SOA MNAME entry error will be shown. New accounts and added domains on A2 Hosting shared servers are set up using ns1.a2hosting.com as the nameserver in the SOA record. In the table above, ns1.a2hosting.com is not listed as a nameserver in the registrar record so SOA MNAME entry will show an error.

To correct the error, add the missing nameserver to the registrar record.

Missing nameservers reported by your nameservers

It is possible to have more nameservers listed at the registrar than  are set up on the server. If you visit the control panel for the server and the registrar, that may look something like this:

Server Record Registrar Record
example.com. 86400 IN NS ns3.a2hosting.com.
example.com. 86400 IN NS ns4.a2hosting.com.
Nameserver 1: ns1.a2hosting.com
Nameserver 2: ns2.a2hosting.com
Nameserver 3: ns3.a2hosting.com
Nameserver 4: ns4.a2hosting.com

  In the table above, two nameserver records are missing from the server so a Missing nameservers reported by your nameservers error will be shown.

To correct the error, add the missing nameservers to the server record.