Summary
160.19.203.in-addr.arpa is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. Two nameservers have the same IP number. All of them are on the same IP network.
net.py,
una.py,
rr.net,
org.py,
com.py and at least 53 other hosts share nameservers with this domain.