Summary
gen.com.ar is delegated to two nameservers, however both delegated nameservers are missing in the zone. All nameservers are at
calu.net. They are on the same IP network.
9k.com.ar,
a1.com.ar,
qq.com.ar,
tcc.com.ar,
bkb.com.ar and at least 55 other hosts share nameservers with this domain.
com.ar is a domain controlled by six nameservers. All of them are on different IP networks.