go
c.dns.cn has one IP number , which also has a corresponding reverse pointer. cn, gz.cn, fj.cn, mo.cn, tw.cn and at least 37 other hosts use this as a nameserver. dns.cn is a domain controlled by five nameservers at dns.cn themselves. All of them are on different IP networks. dns.cn has one IP number. c.dns.cn is hosted on a server in China.

c.dns.cn
a records
 
+ 203.119.27.1 203.119.27.0/24 AS24151 -
+ --- -

dns.cn
a records
 
+ 218.241.99.89 218.241.96.0/20 AS24151  
+ ---  
ns-soa records
a.dns.cn
+ 203.119.25.1 203.119.25.0/24 AS24151 -
+ --- -
ns records
a.dns.cn
+ 203.119.25.1 203.119.25.0/24 AS24151 -
+ --- -
b.dns.cn
+ 203.119.26.1 203.119.26.0/24 AS24151 -
c.dns.cn
+ 203.119.27.1 203.119.27.0/24 AS24151 -
d.dns.cn
+ 203.119.28.1 203.119.28.0/24 AS24151 -
e.dns.cn
+ 203.119.29.1 203.119.29.0/24 AS24151 -
ip numbers of host
203.119.27.1
ptrs of ip numbers
c.dns.cn
ip numbers using ptr to this host
203.119.27.1
domains using this as nameserver
ac.cn
ah.cn
bj.cn
cn
com.cn
cq.cn
dns.cn
fj.cn
gd.cn
gov.cn
gs.cn
gx.cn
gz.cn
ha.cn
hb.cn
he.cn
hi.cn
hk.cn
hl.cn
hn.cn
jl.cn
js.cn
jx.cn
ln.cn
mil.cn
mo.cn
net.cn
nm.cn
nx.cn
org.cn
qh.cn
sc.cn
sd.cn
sh.cn
sn.cn
sx.cn
tj.cn
tw.cn
xj.cn
xz.cn
yn.cn
zj.cn