exchange.odpcloud.com has no NS records.
NS records for this zone are defined at odpcloud.com.
NS records for this zone are defined at odpcloud.com.
Question and response
Question
dig exchange.odpcloud.com. NS
Answer
The response has no answer records.
Authority
odpcloud.com. 3600 SOA ns1.odp-cloud.com. support.omandatapark.com. 95989 14400 7200 2419200 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0