admin.intalpel.com has no NS records.
NS records for this zone are defined at intalpel.com.
NS records for this zone are defined at intalpel.com.
Question and response
Question
dig admin.intalpel.com. NS
Answer
The response has no answer records.
Authority
intalpel.com. 300 SOA ns1-auth.etb.net.co. postmaster.etb.net.co. 2018042689 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0