chip.yebocloud.com has no NS records.
NS records for this zone are defined at yebocloud.com.
NS records for this zone are defined at yebocloud.com.
Question and response
Question
dig chip.yebocloud.com. NS
Answer
The response has no answer records.
Authority
yebocloud.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1772468145 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0