@gbopola Have you recently made any changes to your DNS?
You could try the steps in this Support Guide:
https://answers.netlify.com/t/support-guide-what-are-the-netlify-and-netlifyv6-type-dns-records-how-do-i-delete-these-records/17430#p-47963-if-i-deleted-a-netlify-type-dns-record-by-mistake-how-do-i-recreate-it-5