Unfortunately, 'mauricio' is on the global domain reserve list administered by ICANN, so it cannot be registered on any ngTLD. I believe it's Mauritius in another language?
Do you happen to have a link to said list? A quick googling returned nothing relevant for me.
https://www.icann.org/resources/country-territory-names#rese...
ICANN definitely went overboard on these required reservations, but of course we have no choice but to comply.