Is it possible to keep both the domain and the subdomain into single route 53 zone?

Question

It seems that the information regarding configuring both a domain and subdomain on aws route 53 is not quite complete and I would like to know if is possible to keep all records in a single zone.

Example of records that needs to be resolvable: * example.com * a.example.com * b.a.example.com

I do know that in order to make the b.a.example.com resolvable you need to add NS records inside a.example.com but it is this enough?

Amazon allows you to add any records inside the same zone so I suspect this may work.

Answer 1

Yes, you can add all of these in one zone, and you do not need NS records for a.example.com to get b.a.example.com to work in this scenario.