DLF Schema for DNS service Each records in the DNS DLF schema represents a query that was made to the DNS server, zone transfers or other types of administrative information isn't represented in the schema. The time at which the query was processed by the server. The host that made the request. The content of the DNS request. DNS queries are usually about an hostname. The record type that was requested. Common DNS record types are PTR, A, CNAME, etc. This field contains recurs if the requests was recursive, that is probably made by a client for which we are configured as primary DNS server. Otherwise this field contains norecurs to denotes that the request wasn't recursive. Non-recursive requests are usually made by a DNS server which is processing a recursive request from one client.