This demo assumes you have a domain name registered through 1and1.com, and starts from their home page.
Now let's learn how to create/register private nameservers (or custom nameservers).
Creating (or registering) private nameservers must be done with the domain registry where the domain name resides; to create ns1.yourdomain.com here, the domain yourdomain.com must be at this registry.
1) Click Customer Login.
2) Enter your 1and1.com User Name and Password in the boxes here.
3) Then click Log In.
You are now logged in to your 1and1.com account.
4) Click Manage Domains.
Creating private nameservers in 1and1.com is a bit different than most domain registrars.
First, we must create two subdomains off of the domain we're creating the nameservers for.
5) Go to New and click Create Subdomain.
6) Enter ns1 and make sure the right domain is selected.
7) Now follow the same steps to create a second subdomain called ns2.
The next step is to point the two subdomains we just created to each of the two IP addresses your host should have provided for you.
8) Select the first subdomain.
9) Go to DNS and select Edit DNS Settings.
10) Under Advanced DNS Settings, select Other IP Address.
11) Enter the first IP Address.
12) Then click OK.
13) Click Go To Overview.
14) Now follow the same steps for the second subdomain.
Make sure the second IP Address you enter is different than the first.
Now that our subdomains are set up, we can use them as our private nameservers.
15) Select the domain name you want to use to create private nameservers.
16) Go to DNS and click Edit DNS Settings.
17) Next to Name Server, select My name server.
18) Enter the two subdomains we created in the boxes here.
19) Then click OK.
Note: "registering private nameservers" requires you to register two separate nameservers (i.e. ns1 and ns2), each with it's own unique IP address.
Remember that after you submit your new nameservers and IP addresses to the registry, it can take 24-48 hours for the new nameservers to propagate, after you make these DNS changes (just like for new domain name registrations).
This is the end of the tutorial. You now know how to register/create new private (or custom) nameservers. Remember that the domain name for which you want nameservers created, must reside in this registry.