AWS sub-subdomain to point to subdomain

Question

For reasons too complicated to explain in this question I have to create a sub-subdomain (for example: sub2.sub.domain.com) to point to the same subdomain (sub.domain.com).

I have tried using a CNAME pointing to the sub.domain.com and an A record pointing to the LB alias, neither of which seem to work.

Is this even possible and if yes, how can I do it in AWS?

Answer 1

The domain was not fully migrated to AWS.