ns2.ip.pt has no NS records.
NS records for this zone are defined at ip.pt.
NS records for this zone are defined at ip.pt.
Question and response
Question
dig ns2.ip.pt. NS
Answer
The response has no answer records.
Authority
ip.pt. 1800 SOA kianchau.ns.cloudflare.com. dns.cloudflare.com. 2396916419 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0