Vercel registered domain nameservers stuck pending

[zayadur]

Summary

I registered a domain a little under 2 years ago and things have been fine. At some point, I pointed the domain to Route53 to serve AWS resources. I swapped the settings back to Vercel recently but the nameservers for the domain have been "pending" for over 2 weeks now. What can I do?

Example

zayadur.com

Steps to Reproduce

1. Register domain on Vercel.
2. Create hosted zone on Route53.
3. Delete hosted zone on Route53.