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Zone File
The file on a nameserver containing all DNS records for a domain.
By DomainGlossary EditorialLast updated Mar 27, 2026
A DNS zone file is a text file stored on a nameserver that contains all DNS records for a domain. It maps domain names to IP addresses, mail servers, and other resources using standard resource record formats (A, AAAA, CNAME, MX, TXT, NS, SOA). Zone files follow the BIND format and are the authoritative source for a domain's DNS configuration.