centrosdigitales.etb.com.co has no NS records.
NS records for this zone are defined at etb.com.co.
NS records for this zone are defined at etb.com.co.
Question and response
Question
dig centrosdigitales.etb.com.co. NS
Answer
The response has no answer records.
Authority
etb.com.co. 60 SOA ns1-auth.etb.net.co. postmaster.etb.net.co. 824 3600 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0