Furthermore, gTLD DNS servers only show three DNS servers for their domain:
agit-global.com nameserver = ns01.idc.hinet.net
agit-global.com nameserver = ns02.idc.hinet.net
agit-global.com nameserver = ns03.idc.hinet.net
While other public DNS systems show six:
agit-global.com nameserver = ns.hinetidc.net
agit-global.com nameserver = ns1.hinetidc.net
agit-global.com nameserver = ns2.hinetidc.net
agit-global.com nameserver = ns01.idc.hinet.net
agit-global.com nameserver = ns02.idc.hinet.net
agit-global.com nameserver = ns03.idc.hinet.net
[some kind of synchronization/configuration issue there...]
LE will follow the gTLD DNS and thus is limited to only the first three.