DNS question

Hello,
I just have a quick question about DNS. When I enter my primary and secondary name servers at where I registered the domain, how does that address resolve into an ip? Example: ns1.asdf123.com ...I know how a normal domain does, but I don't understand how the ip is resolved from that since it obviously can't query my nameserver.

Thanks

1. bad subject. of course this is a dns question. you are in the dns forum.
2. i am not sure if i understand your question correctly, where do you enter the nameserver?
and what is a "normal" domain? all dns names are resolved the same way.
and who do you refer to with "it" in the last sentence? the nameserver?
if you are running your own nameserver, it will probably query the root nameservers for unknown domains. does this answer your question?

Sorry for the confusion,
When I register a domain name, from networksolutions.com for example, I can enter my primary and secondary DNS servers, such as ns1.asdf123.com and ns2.asdf123.com. My question is, what server is queried to resolve ns1.asdf123 and ns2.asdf123 to IP addresses?

afaik you have to enter the IP, not the DNS name. it cannot work like this.
maybe with some nameservers you can, but they make a second entry in their configuration then that translates ns1.asdf123.com to 1.2.3.4.
clients query the server for ".com" for the ns record of "asdf123.com", then this server knows who "ns1.asdf123.com" is.

The roots only when your nameservers are glued.

If you plan on using nameservers based off of a particular domain you will have to register those nameservers with your registrar. Essentially their is a database of Nameserver names and IP addresses that those resolutions get looked up in, it has nothing to do with the actual DNS resolution of the name.

Fill out this form to register primary and secondary servers, assuming the domain was registered with network solutions:

https://www.netsol.com/cgi-bin/makechanges/itts/host