When I ask for whois info https://nametoolkit-name-toolkit.p.mashape.com/beta/whois/nuvemshop.com.br, I got this response.

{“available”:false,“status”:“registered”,“domain”:null,“domain_id”:null,“expiration_date”:null,“registrar”:null,“updated_on”:null,“registrant_contacts”:null,“admin_contacts”:null,“technical_contacts”:null,“nameservers”:[]}

Same response I get if I ask for info on an inexistent domain on com.br