external.servercentral.com has no NS records.
NS records for this zone are defined at servercentral.com.
NS records for this zone are defined at servercentral.com.
Question and response
Question
dig external.servercentral.com. NS
Answer
The response has no answer records.
Authority
servercentral.com. 600 SOA ns1.servercentral.net. dns.servercentral.net. 2025110302 600 600 600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0