DNS Lookup

DNS lookup tool: enter a domain to retrieve A, AAAA, MX, TXT, CNAME, NS records in one query. Great for SPF/DKIM debugging, CDN, and ownership checks.

All processing happens locally in your browser — nothing is uploaded

示例:

· 域名 → A/AAAA/MX/TXT/NS/CNAME + 多 DNS 对比 + SPF/DMARC 解读 · IP → 反向 PTR

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