Mastodon account name not resolved.

The account npub1juz6mw333kpdtrvfms8mmx225w54vn494q69ecyhkgzydgy9w8rs50trfa which translates to @CCC@social.bau-ha.us on Mastodon does not resolve an account name on any client (should be "CCC": https://social.bau-ha.us/@CCC).

Is this a general problem?