214.137.in-addr.arpa is delegated to four nameservers, however three delegated nameservers are missing in the zone. All of them are on different IP networks. ac.za, co.zw, co.ls, mil.gh, gov.za and at least 60 other hosts share nameservers with this domain. 16.214.137.in-addr.arpa are subdomains to this hostname. 137.in-addr.arpa is a domain controlled by seven nameservers at arin.net. All of them are on different IP networks.