go
Sorry, we have no information about reverse-mtl-76-76-96-18.existservers.com. existservers.com is delegated to two nameservers, however both delegated nameservers are missing in the zone. All nameservers are at existservers.com themselves. They are on different IP networks.

existservers.com
ns records
ns2.existservers.com
+   AS?  
+ ---  
ns.existservers.com
+ 208.65.60.8 208.65.60.0/22 AS21793 reverse-mtl-60-8.gogax.com
+ --- reverse-mtl-60-8.gogax.com
nameservers missing in zone
ns.existservers.com
ns2.existservers.com