bands.exhgost.com has no NS records.
NS records for this zone are defined at exhgost.com.
NS records for this zone are defined at exhgost.com.
Question and response
Question
dig bands.exhgost.com. NS
Answer
The response has no answer records.
Authority
exhgost.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1772714286 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0