1. TLD/net/ja.net

https://www.ja.net/about-janet/about-us

$ dnsq ns ja.net a.gtld-servers.net

2 ja.net:
344 bytes, 1+0+5+10 records, response, noerror
query: 2 ja.net
authority: ja.net 172800 NS ns0.ja.net
authority: ja.net 172800 NS ns1.surfnet.nl
authority: ja.net 172800 NS ns1.ja.net
authority: ja.net 172800 NS ns2.ja.net
authority: ja.net 172800 NS ns4.ja.net
additional: ns0.ja.net 172800 A 128.86.1.20
additional: ns0.ja.net 172800 A 193.63.94.20
additional: ns0.ja.net 172800 AAAA 2001:630::8:0:0:0:14
additional: ns0.ja.net 172800 AAAA 2001:630::9:0:0:0:14
additional: ns1.ja.net 172800 A 194.81.227.226
additional: ns1.ja.net 172800 AAAA 2001:630::44:0:0:0:e2
additional: ns2.ja.net 172800 A 193.63.105.17
additional: ns2.ja.net 172800 AAAA 2001:630::45:0:0:0:11
additional: ns4.ja.net 172800 A 193.62.157.66
additional: ns4.ja.net 172800 AAAA 2001:630::47:0:0:0:42

ccTLD/nl/surfnet.nl

$ dnsq ns ja.net ns0.ja.net

2 ja.net:
388 bytes, 1+5+0+12 records, response, authoritative, noerror
query: 2 ja.net
answer: ja.net 86400 NS ns0.ja.net
answer: ja.net 86400 NS ns1.surfnet.nl
answer: ja.net 86400 NS ns1.ja.net
answer: ja.net 86400 NS ns4.ja.net
answer: ja.net 86400 NS ns2.ja.net
additional: ns0.ja.net 86400 A 193.63.94.20
additional: ns0.ja.net 86400 A 128.86.1.20
additional: ns0.ja.net 86400 AAAA 2001:630::9:0:0:0:14
additional: ns0.ja.net 86400 AAAA 2001:630::8:0:0:0:14
additional: ns1.ja.net 86400 A 194.81.227.226
additional: ns1.ja.net 86400 AAAA 2001:630::44:0:0:0:e2
additional: ns1.surfnet.nl 3600 A 192.87.106.101
additional: ns1.surfnet.nl 3600 AAAA 2001:610:1:800a:192:87:106:101
additional: ns2.ja.net 86400 A 193.63.105.17
additional: ns2.ja.net 86400 AAAA 2001:630::45:0:0:0:11
additional: ns4.ja.net 86400 A 193.62.157.66
additional: ns4.ja.net 86400 AAAA 2001:630::47:0:0:0:42