Summary
1.16.206.in-addr.arpa is delegated to three nameservers, however all three delegated nameservers are missing in the zone. All nameservers are at
cnet.com. All of them are on different IP networks.
tv.com,
mp3.com,
cnet.de,
com.com,
zdnet.de and at least 41 other hosts share nameservers with this domain.
16.206.in-addr.arpa is a domain controlled by four nameservers. Some of them are on the same IP network.