We pick j.root-servers.net, one of the 13 root servers (1), and ask it about unsecuredpersonallineofcredit.us and learn that us is delegated to six name servers (2), so we ask e.cctld.us and get the following answer:
Authoritative answer
AUTHORITATIVE for unsecuredpersonallineofcredit.us.
Unsecuredpersonallineofcredit.us is a domain controlled by two domain name servers at websitewelcome.com. Both are on different IP networks. The primary name server is ns1523.websitewelcome.com....