🔍 DNS Checker

Professional DNS analysis & health inspection tool

Enter a domain to analyze

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Section Status Test Details
🌐

Parent NS Analysis

Verify domain delegation at TLD parent servers with glue records.

🖥

Nameserver Health

Check NS consistency, UDP/TCP reachability, ASN diversity.

📋

SOA Validation

Inspect SOA timers against RFC 1912 recommended ranges.

📧

MX Records

Validate mail servers, PTR lookups, public IPs, CNAME violations.

🔗

WWW Resolution

Confirm A records, apex CNAME rules, reverse DNS, ASN info.

⚡

Progressive Loading

Results stream in section-by-section — no waiting for full analysis.