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Strict DNS Zone Validator & RFC Standard Auditor

DNS Diagnostic Tools

Ensure your domain's architectural foundations are rock-solid. Perform an exhaustive, real-time audit to detect illegal apex CNAMEs, validate strict SOA parameters, and enforce RFC compliance across all nameserver and MX delegations using live, un-cached DoH queries.

Ready to Validate Zone

Perform an exhaustive audit on your domain's zone. We will check the SOA record, verify apex CNAME rules, and ensure proper nameserver delegation mapping.

Why Use DNS Zone Validator?

Ensure your domain adheres to critical RFC networking protocols. Catch severe structural errors before they cause outages, propagation failures, or deliverability blocks.

Apex CNAME Detection

Detects if a CNAME record is illegally mapped to the root domain (zone apex). This is a critical RFC violation that breaks MX, TXT, and SOA functionality.

SOA Parameter Audit

Fetches and validates the Start of Authority (SOA) record. Ensures critical fields like MNAME, RNAME, Serial, Refresh, and Retry exist and function correctly.

Nameserver Redundancy

Evaluates the delegation path of your domain to ensure there are at least two valid authoritative nameservers, protecting against fatal zone failures.

MX Target Validation

Analyzes Mail Exchanger targets to warn against configurations where an MX record points to a CNAME instead of an A/AAAA record, another common RFC infraction.

RFC Compliance Scoring

Aggregates all findings into an easily digestible Zone Score from 0 to 100, letting you know instantly if your domain's architectural foundations are secure.

Live DoH Queries

Executes real-time DNS over HTTPS (DoH) requests to global public resolvers, completely bypassing caches to deliver 100% accurate and immediate validation.

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Strict DNS Zone Validator & RFC Standard Auditor

Ready to Validate Zone

Why Use DNS Zone Validator?

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