_9218d7bf3ac9a353d1315b67d242195a.oi.com.br has no NS records.
NS records for this zone are defined at oi.com.br.
NS records for this zone are defined at oi.com.br.
Question and response
Question
dig _772f85876c532b6e6ab68880382d29ef.sdgjtdhdhz.acm-validations.aws. NS
Answer
The response has no answer records.
Authority
sdgjtdhdhz.acm-validations.aws. 900 SOA ns-1871.awsdns-41.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0