antispam2.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 antispam2.thaicloudsolutions.com. NS
Answer
The response has no answer records.
Authority
thaicloudsolutions.com. 3600 SOA ns-a1.cloud.z.com. postmaster.example.org. 1772787805 3600 600 86400 3600
Additional
. 0 OPT ; payload 2800, xrcode 0, version 0, flags 0