secureus.options-it.com has no NS records.
NS records for this zone are defined at options-it.com.
NS records for this zone are defined at options-it.com.
Question and response
Question
dig secureus.options-it.com. NS
Answer
The response has no answer records.
Authority
options-it.com. 300 SOA a1-137.akam.net. hostmaster.options-it.com. 2021111252 3600 600 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0