The named.ca File in Linux

The named.ca File

The named.ca file establishes the names of root servers and lists their addresses. If your network is connected to the Internet, named.ca lists the Internet name servers; otherwise, it lists the root domain name servers for your local network. The in.named daemon cycles through the list of servers until it contacts one of them. It then obtains from that server the current list of root servers, which it uses to update named.ca.

You can retrieve root zone file by visiting ftp://ftp.rs.internic.net. Login as anonymous user and get db.cache file from domain subdirectory.