ds2.opaltelecom.net has no NS records.
NS records for this zone are defined at opaltelecom.net.
NS records for this zone are defined at opaltelecom.net.
Question and response
Question
dig ds2.opaltelecom.net. NS
Answer
The response has no answer records.
Authority
opaltelecom.net. 300 SOA ds0.opaltelecom.net. noc.opaltelecom.net. 2025040900 600 7200 2592000 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0