> Administered by the non-profit Fundació puntCAT under the oversight of ICANN, registrations are available only to individuals and organizations demonstrating use or promotion of the Catalan language and culture.
ETA: This category lists 314 ccTLDs.
https://icannwiki.org/Category:CcTLD
There are 316 ccTLDs. So; it's either missing 2, or they are documented but not in the right category.
If you're looking for an authoritative source I think you should check out the PSL, but it doesn't have the right metadata to answer your question. You'd need to supplement it somehow.
nyan.cat has a language picker that includes Catalan, even though it just changes the page title.
One could say by having the websites become popular and viral, and offering versions of the their websites in Catalan, they are spreading Catalan culture to more parts of the internet. We're having a discussiong about it right now, others are reading, pretty big impact from just the TLD choice :)