This is useful. Thank you!
I self-hosted mine. Here’s a tutorial.
https://orangepill.dev/nostr-guides/guide-to-verify-nostr-profile-nip05-identifier-with-your-domain/
If you’re in a hurry you can go to https://nostrplebs.com/ and buy one. Costs a lot less than $11/month!
Discussion
Couldn’t have done it without #[6] and #[7] 🙌