Linkskey LKR-604 - Manual (Page 26)

LKR-604
18
DNS
The Domain Name System (DNS) manages the translation of a
domain name into an IP address, and vice versa that of an IP
address into a domain name
.
Your ISP should provide one or more DNS Server IP addresses, type
those IP addresses in the Primary DNS address and Secondary DNS
address fields, the LKR-604 Broadband Router will utilize these
simultaneously for quicker access to functioning DNS Servers.