relay.thaicloudsolutions.com has no NS records.
NS records for this zone are defined at thaicloudsolutions.com.
NS records for this zone are defined at thaicloudsolutions.com.
Question and response
Question
dig relay.thaicloudsolutions.com. NS
Answer
The response has no answer records.
Authority
thaicloudsolutions.com. 3600 SOA ns-a1.cloud.z.com. postmaster.example.org. 1773041721 3600 600 86400 3600
Additional
. 0 OPT ; payload 2800, xrcode 0, version 0, flags 0