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Domain footprint: mastercabo.com.br

Resolved live just now — where this domain's services actually run, with each address attributed by OrgIndex. A DNS observation, not registry data: many organisations run entirely on providers' networks and hold no IP space of their own.

Web: 189.91.1.55 → MASTER S/A

Mail: mx-ha.skymail.net.br → Skymail Serviços de Computação e Provimento de Inf

SPF sends via: spf.skymail.net.br

No organisation is registered under the name "mastercabo.com.br"

The addresses above are where it actually runs — resolved live and attributed to the operator that registered each range. That is the answer for a domain; a name match here would only add something if a company were registered under this name too.

Sites hosted on a provider (OVH, Cloudflare, AWS and the like) show that provider, because the address space is registered to them rather than to the site's owner.