We get this a lot at my job, where many customers' admins block s3 buckets by default. We give our customers a list of hostnames to allowlist and if they can't figure it out, that's on them.
Newly-registered domains are not generally an issue with enterprise users. However, they are overrepresented in malicious traffic due to domain-generation algorithms (DGAs).
I take it this means enterprise users are not generally needing to do anything legit-for-work on a newly registered domain.
Enterprise clicks on newly registered domains tend to be (a) being phished or smished or cryptomined or whatever, or (b) someone reading X or Bsky or HN or ProductHunt's vibe code of the date -- things the enterprise would also like to have blocked.
Consider the CloudFlare/Proofpoint/NextDNS/etc. domain block on new domains much like updating one's HN home page to https://news.ycombinator.com/classic …