DNS/awsdns/ホワイトラベルについて、ここに記述してください。

https://docs.aws.amazon.com/ja_jp/Route53/latest/DeveloperGuide/white-label-name-servers.html ホワイトラベルネームサーバーの設定

ホワイトラベルネームサーバーの設定

Configuring white-label name servers https://github.com/awsdocs/amazon-route53-docs/blob/master/doc_source/white-label-name-servers.md

Adding or changing name servers and glue records for a domain https://github.com/awsdocs/amazon-route53-docs/blob/master/doc_source/domain-name-servers-glue-records.md 

When you register a domain with Route 53,
  we automatically create a hosted zone for the domain,
  assign four name servers to the hosted zone, 
  and then update the domain registration to use those name servers.

You typically don't need to change those settings unless you want to use another DNS service or you want to use white-label name servers.