Summary
100.150.in-addr.arpa is delegated to two nameservers, however one extra nameserver is listed in the zone. All nameservers are at
sinet.ad.jp. All of them are on the same IP network.
kek.jp,
unu.edu,
jaxa.jp,
cis.ac.jp,
mdx.or.jp and at least 77 other hosts share nameservers with this domain.
1.100.150.in-addr.arpa,
2.100.150.in-addr.arpa,
3.100.150.in-addr.arpa,
32.100.150.in-addr.arpa,
12.100.150.in-addr.arpa and at least two other hosts are subdomains to this hostname.
150.in-addr.arpa is delegated to five nameservers, however one extra nameserver is listed in the zone. All of them are on different IP networks.