ns.refertelecom.pt has no NS records.
NS records for this zone are defined at refertelecom.pt.
NS records for this zone are defined at refertelecom.pt.
Question and response
Question
dig ns.refertelecom.pt. NS
Answer
The response has no answer records.
Authority
refertelecom.pt. 900 SOA dns.refertelecom.pt. root.refertelecom.pt. 2026011301 28800 7200 1209600 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0