I have created a new and free NIP-05 identifier service.

https://nip05.nostrprotocol.net

As a member, you can obtain a NIP-05 identifier in your own name at the domain nostrprotocol.net. You can access the codes at https://github.com/KiPSOFT/nostr-nip05-service. Please let me know if you encounter any errors or issues.