Summary
150.136.193.in-addr.arpa is delegated to three nameservers, however one delegated nameserver is missing in the zone and one other nameserver is listed instead. All of them are on the same IP network.
pt,
dns.pt,
lneg.pt,
essi.pt,
ricoh.pt and at least 42 other hosts share nameservers with this domain.
136.193.in-addr.arpa is a domain controlled by four nameservers. All of them are on the same IP network.