cs2.jogos.uol.com.br has no NS records.
NS records for this zone are defined at jogos.uol.com.br.
NS records for this zone are defined at jogos.uol.com.br.
Question and response
Question
dig cs2.jogos.uol.com.br. NS
Answer
The response has no answer records.
Authority
jogos.uol.com.br. 3600 SOA a10-dns-uolcsfe1.host.intranet. root.uol.com.br. 2015091407 7200 3600 432000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0