go
u.nic.eu has one IP number , which also has a corresponding reverse pointer. eu use this as a nameserver. nic.eu is a domain controlled by four nameservers. All of them are on different IP networks. u.nic.eu is hosted on a server in United States even though the hostname implies Europe.

u.nic.eu
a records
 
+ 204.74.112.247 204.74.112.0/24 AS12008 -
+ --- -

nic.eu
ns-soa records
a.nic.eu
+ 91.200.16.100 91.200.16.0/22 AS1200 -
+ --- -
ns records
b.eu.dns.be
+ 193.190.135.100 193.190.0.0/15 AS2611 -
+ --- -
l.nic.eu
+ 195.66.241.178 195.66.224.0/19 AS5459 -
m.nic.eu
+ 217.29.76.13 217.29.72.0/21 AS16004 -
a.nic.eu
+ 91.200.16.100 91.200.16.0/22 AS1200 -
ip numbers of host
204.74.112.247
ptrs of ip numbers
u.nic.eu
ip numbers using ptr to this host
156.154.100.7
204.74.112.247
domains using this as nameserver
eu