Generally, a domain name may have any number of Child Name Servers associated with it.
You will encounter the below error message in case an invalid or reserved IP Address is used:
Attention
Object does not exist
An IPv6 Address may be entered in either of the following formats:
2001:0db8:0000:0000:0000:0000:20.40.87.171
2001:0db8:0000:0000:0000:0000:1428:57ab
2001:0db8:0000:0000:0000::1428:57ab
2001:0db8:0:0:0:0:1428:57ab
2001:0db8:0:0::1428:57ab
2001:0db8::1428:57ab
2001:db8::1428:57ab
IPv6 Addresses are not supported for some TLDs:
.NZ
.WS
.NAME
.CO
.CA
.DE
.ES
.RU
Registering a Child Name Server as mentioned above is just the first step. The Child Name Server is required to be registered at the Registry to only serve as a
non-authoritative Record should your Child Name Server not be resolvable in some extreme condition.
This Name Server would start working only after you have added either an Address (A) Record for IPv4 or AAAA Record for IPv6 or Canonical
(CNAME) Record for this Name Server within the Zone for the domain name (of this Child Name Server) in your own DNS Server, thus binding the NS to the IP Address.
Examples:
If you are running your own DNS Servers, then you would need to add a Zone for the domain name yourdomainname.com and create an A Record like:
ns1.yourdomainname.com. 38400 IN A 111.222.333.444
Similarly, you may add an AAAA Record as
ns1.yourdomainname.com. 38400 IN AAAA 2001:0db8:0:0:0:0:1428:57ab
If you wish to simply point your Name Servers to other Name Servers, then you may do so by either:
you may either add a CNAME Record to your Service Provider's Name Server, after enabling Managed DNS service through them:
ns1.yourdomainname.com. 38400 IN CNAME ns1.serviceprovider.com
or
you may add an A or AAAA Record to your Service Provider's Name Server IP Address (depending upon whether your Service Provider has an IPv4 or IPv6), after enabling
Managed DNS service through them:
ns1.yourdomainname.com. 38400 IN A 777.888.999.000
or
ns1.yourdomainname.com. 38400 IN AAAA 2001:0db8:0:0:0:0:1428:57ab
Generally, each Child Name Server may have upto 13 unique IP Addresses associated with it.
For CentralNic (Anchor: crules) domains, each Child Name Server may only
have a single unique IP Address associated with it.
In case of .EU domain names (Anchor: eurules), all Child Name Servers that you create/add,
are automatically associated with that .EU domain name as a Name Server. Due to this limitation,
you will only be able to add upto 9 Child Name Servers for .EU domain names.
The maximum number of Name Servers that can be associated with any .EU domain name is 9. If you have already added other Name Servers (not Child Name Servers of this .EU
domain name), then the number of Child Name Servers that you may create would reduce by that many.
Examples:
yourdomainname.eu
Child Name Servers created: ns1.yourdomainname.eu and ns2.yourdomainname.eu
These Child Name Servers get automatically added as Name Servers as well for this domain name: ns1.yourdomainname.eu and ns2.yourdomainname.eu
yourotherdomainname.eu
Name Servers used: ns1.hostingprovider.com, ns2.hostingprovider.com
Child Name Servers created: ns1.yourotherdomainname.eu, ns2.yourotherdomainname.eu
These Child Name Servers get automatically added as Name Servers for this domain name: ns1.yourotherdomainname.eu, ns2.yourotherdomainname.eu
So in all 4 Name Servers will be associated with yourotherdomainname.eu: ns1.hostingprovider.com, ns2.hostingprovider.com, ns1.yourotherdomainname.eu,
ns2.yourotherdomainname.eu
This means that now for the domain name yourotherdomainname.eu, you may only add upto 5 other Child Name Servers or Name Servers since every time you create a Child Name Server,
it gets automatically associated with the .EU domain name as a Name Server.
Apart from the above, in case of .EU domain names, each Child Name Server may have upto 9 unique IP Addresses associated with it.
Example:
You can Registrar a Child Name Server with the Host Name ns1 for yourdomainname.eu and associate upto 9 unique IP Addresses with this Host Name.
In case of .UK domain names (Anchor: ukrules), all Child Name Servers that you create/add,
are automatically associated with that .UK domain name as a Name Server. Due to this limitation,
you will only be able to add upto 10 Child Name Servers for .UK domain names.
The maximum number of Name Servers that can be associated with any .UK domain name is 10.
If you have already added other Name Servers (not Child Name Servers of this .UK domain name), then the number of Child Name Servers that you can create would reduce by that many.
Examples:
yourdomainname.uk
Child Name Servers created: ns1.yourdomainname.uk and ns2.yourdomainname.uk
These Child Name Servers get automatically added as Name Servers as well for this domain name: ns1.yourdomainname.uk and ns2.yourdomainname.uk
yourotherdomainname.uk
Name Servers used: ns1.hostingprovider.com, ns2.hostingprovider.com
Child Name Servers created: ns1.yourotherdomainname.uk, ns2.yourotherdomainname.uk
These Child Name Servers get automatically added as Name Servers for this domain name: ns1.yourotherdomainname.uk, ns2.yourotherdomainname.uk
So in all 4 Name Servers will be associated with yourotherdomainname.uk: ns1.hostingprovider.com, ns2.hostingprovider.com, ns1.yourotherdomainname.uk,
ns2.yourotherdomainname.uk
This means that now for the domain name yourotherdomainname.uk, you can only add upto 6 other Child Name Servers or Name Servers since every time you create a Child Name Server,
it gets automatically associated with the .UK domain name as a Name Server.
Moreover, in case of .UK domain names, each Child Name Server can have only a single unique IP Address associated with it.
Example:
You can Registrar a Child Name Server with the Host Name ns1 for yourdomainname.uk and associate only a single unique IP Address with this Host Name.
Child Name Servers can not be created under a .TEL domain name (Anchor: telrules),
due to restrictions placed by the Registry.
A .CN domain name (Anchor: cnrules) can only have upto 6 Child Name
Servers associated with it and each Child Name Server can have only a single unique IP Address
associated with it.
If a particular IP Address is already associated with any other .CN domain name's Child Name Server registered through any Registrar, then it can not
be used with any other Child Name Server under any other .CN domain name.
Examples:
You may Registrar a Child Name Server with the Host Name ns1 for yourdomainname.com.cn and associate 66.11.11.11 with it. This Child Name Server
would be created only if the IP Address 66.11.11.11 is not already associated with any other .CN domain name's Child Name Server registered through any Registrar.
Once you have registered a Child Name Server with the IP Address 66.11.11.11 for yourdomainname.com.cn, you may add only 5 other Child Name Servers under this domain name
but none of the remaining 5 can be registered with 66.11.11.11 (since it is already used).
The total number of Name Servers and Child Name Servers taken together should not exceed 10 in case of
.NZ domain names (Anchor: nzrules).
Examples:
Consider a domain name yourdomain.co.nz with Name Servers as ns1.yourdomain.com and ns2.yourdomain.com. The total number of additional Name Servers that can be added under
yourdomain.co.nz alongwith any Child Name Servers that can be created under yourdomain.co.nz will be 8.
On a similar note, a domain name yourdomain.co.nz is using its own Child Name Servers ns1.yourdomain.co.nz and ns2.yourdomain.co.nz as its Name Servers as well.
Here, the total number of additional Name Servers that can be added under yourdomain.co.nz, taken together with any new Child Name Servers created under
yourdomain.co.nz will be 6.
Moreover, each Child Name Server under a .NZ domain name can have only 1 IPv4 Address associated with it.
Example:
You may Registrar a Child Name Server with the Host Name ns1 for yourdomainname.co.nz and associate only a single IP Address of the form 66.11.11.11
with it.
Each .DE domain name (Anchor: derules) needs to have at least 2 Name Servers
and can have upto 13 Name Servers. The limitation of supporting a maximum of 13 Name Servers is common for both Child Name Servers and Name Servers.
Examples:
If you add 4 Name Servers for your .DE domain name, then you may now add only upto 9 Child Name Servers or Name Servers.
If you add 2 Name Servers and 2 Child Name Servers for your .DE domain name, then you may now add only upto 9 Child Name Servers or Name Servers.
The first three segments of the IPv4 (IP) address of at least 1 Name Server (either Child Name Server or Name Server) needs to be different from the others.
Examples:
If you try adding 4 Name Servers - ns1.hosting.com, ns2.hosting.com, ns3.hosting.com, ns4.hosting.com for your .DE domain name and if their individual IPv4 addresses are
67.15.253.220, 67.15.253.221, 67.15.253.222, 67.15.253.223, then you will get an error since the first three segments no single IP address is unique.
If you add 2 Name Servers (ns1.hosting.com, ns2.hosting.com) and 2 Child Name Servers (ns1.myname.de, ns2.myname.de) for myname.de and if their IPv4 addresses are 67.15.253.220,
67.15.253.221, 67.15.253.222, 74.54.56.236, then you will not get an error since at least 1 IP address has its first three segments unique.
To add a Child Name Server for your .DE domain name, you need to follow the below mentioned process:
In the Zone of your .DE domain name, add an Address (A) Record for the first Child Name Server that you plan to submit for your .DE domain name.
Once the above A Record starts resolving, add this Child Name Server to your .DE domain name.
Repeat the above two steps for any number of Child Name Servers that you wish to add.
If you plan to use your Child Name Servers as your Name Servers, you would need to create NS Records for the same, before modifying the Name Servers.
Example:
If you add 2 Child Name Servers ns1.myname.de and ns2.myname.de for myname.de, then prior to using them as Name Servers of myname.de, you need to ensure that
you add ns1.myname.de and ns2.myname.de as NS Records.
.DE domain names do not support IPv6 addresses.
In case of .ES domain names (Anchor: esrules) you may associate only a single
IPv4 Address per Child Name Server.
In case of .RU (Anchor: rurules) domain names, the same IP Address can
not be reused for another Child Name Server.