go
a.nic.de has one IP number , which also has a corresponding reverse pointer. de use this as a nameserver. nic.de is delegated to five nameservers, however one delegated nameserver is missing in the zone. Two nameservers have the same IP number. Two of them are on the same IP network. Incoming mail for nic.de is handled by two mailservers at denic.de. They are on the same IP network. a.nic.de is hosted on a server in Germany.

a.nic.de
a records
 
+ 194.0.0.53 194.0.0.0/24 AS31529 -
+ --- -

nic.de
ns-soa records
ns1.denic.de
+ 81.91.170.1 81.91.170.0/24 AS8763 -
+ --- -
ns records
ns1.denic.de
+ 81.91.170.1 81.91.170.0/24 AS8763 -
+ --- -
ns2.denic.de
+ 193.171.255.36 193.170.0.0/15 AS1853 -
ns3.denic.de
+ 87.233.175.19 87.233.128.0/18 AS15703 -
ns4.denic.net
+ 66.35.208.43 66.35.192.0/18 AS3561 dns13.denic.de
+ --- dns13.denic.de
ns5.denic.net
+ 66.35.208.43 66.35.192.0/18 AS3561 dns13.denic.de
mx records
mx2.denic.de
+ 81.91.161.38 81.91.160.0/20 AS8763  
+ ---  
mx1.denic.de
+ 81.91.161.37 81.91.160.0/20 AS8763 -
+ --- -
ip numbers of host
194.0.0.53
ptrs of ip numbers
a.nic.de
ip numbers using ptr to this host
194.0.0.53
domains using this as nameserver
de
nameservers missing in zone
ns5.denic.net