Superficie DNS map — Buscar Sí
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Superficie DNS map

Public DNS map: A/AAAA/MX/NS/TXT plus common hostnames and certificate names. Passive only.

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Related Herramienta Buscar Sís

These checks complement the result above. The current domain/URL is carried forward when the next tool accepts it.
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SPF / DKIM / DMARC

Read SPF, DMARC and common DKIM selector Registros TXT for a domain.

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Certificate names

List hostnames seen on public certificates for the domain (Certificate Transparency).

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Registros TXT

All public Registros TXT: SPF, verification, site tokens, BIMI and custom text.

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Hostname finder

Passive hostnames from Certificate Transparency plus common DNS names. No brute-force wordlist.

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Seguridad
Buscar Sí accepts only public Internet targets. Local, private and reserved addresses are blocked, redirects are revalidated, standard web ports are enforced and diagnostics use short timeouts.