DNS Zone Record Builder

Compose a DNS record with visible fields

DNS control panels often split a record into fields that later become one zone-file line. This builder validates a whitespace-free owner, non-negative TTL, recognized class, supported record type, and required value before composing them in zone order. A and AAAA values are parsed as addresses, MX adds a numeric priority, SRV expects weight, port, and target after its priority, and TXT text is quoted and escaped.

The defaults create www 3600 IN A 192.0.2.10. Switching to MX would prepend the selected priority to the mail target, while TXT would preserve quotes and backslashes safely inside a quoted value. Invalid address syntax, missing values, and priorities outside the unsigned 16-bit range return readable errors.

Type-specific validation and provider differences

Providers vary in whether they want a fully qualified owner or target, automatically append the zone name, or expose TTL and class fields. This tool does not query or update DNS; it generates one line in your browser. Compare the result with provider conventions and remember that changes depend on authoritative publication and cache expiration, not merely correct text syntax.