My domain is registered with Route53. I have a wix website, which I'm using as my SaaS app's landing page. I will have a subdomain for my SaaS application app.mywebsite.com. My plan will be to use an A record to point to a S3 bucket to serve the actual SaaS JS application.
Wix told me that to link to my wix site from route53 I should change my NS servers to theirs. So I did. It's taking it's sweet ass time and after some more reading, given I want to do a bunch of DNS configurations (e.g. the A record for JS application, MX and TXT records), I should have used an A record to point to my wix website. Granted I could be wrong on this, but I don't know what the full ramifications are of having wix 'hosting my DNS'.
So I want to revert the NS record to what it was when Amazon created it for me/default. Problem is, I don't know what my original NS servers were on Route53. Is there any way to find them out?
For my own understanding, what is really happening when I edit the NS records? When I change the NS records in route53, does Amazon submit to some root/authoritative name servers meaning if someone attempts to access mywebsite.com, go to these (name) servers and they will know exactly where my website is located?