To serve better our customers needs we have changed the format of our export files to tab-delimited CSV, and now it has additional information such as NS servers, country of origin, etc.
Domain is obviously a domain name;
Date added is a date when domain comes into our database first time;
NS Servers is the list of 2 or more NS servers for this domain returned at our last NS check;
IP address is an IP address from a domain’s A record. A record is also called Address Record or sometimes Host Record. A record only resolves to IP addresses. This record points your domain to the IP address of your website or hosting.
Country is a Country ISO code, where domain hosted according to A record IP address and GeoIP database.