23.148.159.in-addr.arpa is a domain controlled by two nameservers on different IP networks. db.lv, mt.lv, jt.lv, zz.lv, hi.lv and at least 57 other hosts share nameservers with this domain. 148.159.in-addr.arpa is delegated to three nameservers, however one delegated nameserver is missing in the zone. Two of them are on the same IP network.