https://dremaxx.de/en/dns-tools/zone-transfer
Check zone transfer (AXFR) – dremaxx
Check whether an authoritative nameserver of a domain allows a full zone transfer to anonymous clients.
zone transfercheckaxfr
https://manpages.ubuntu.com/manpages/focal/man3/ldns_axfr_last_pkt.3.html
Ubuntu Manpage: ldns_axfr_start, ldns_axfr_next, ldns_axfr_abort,
ubuntumanpageaxfrstartnext