The direct answer
Not necessarily. Organisational-domain lookup can supply a default logo, while a subdomain-specific record can take precedence. Check the actual sending identity and certificate coverage before relying on inheritance.
How should I map a parent and subdomain?
For a fictional sender using news.example.com, record the intended logo and inspect both that sending identity and the organisational-domain setup. If the newsletter needs different branding, make that requirement explicit before deciding where to publish a record.
Do not assume record lookup also proves certificate coverage. They answer different questions: where the receiver finds the reference, and which domains the certificate covers.
What should I verify before launch?
Check the applicable DMARC policy, real message alignment, public record lookup and the issuer-confirmed domain scope. Test representative mail from the subdomain itself.
Keep a simple inventory of these relationships. It is especially useful when a team adds a new marketing subdomain or moves an existing stream, because a familiar parent brand can conceal a changed technical identity.
Sources & further reading
Provider guidance checked on . Requirements can change; check the original guidance when implementing. Planning checklists and examples are BIMI World’s editorial suggestions.