go
mx.chilesat.net has one IP number. mx.telmexchile.cl point to the same IP. chilesat.net use this as a mailserver. chilesat.net is a domain controlled by three nameservers. Two of them are on the same IP network. Incoming mail for chilesat.net is handled by one mailserver at chilesat.net themselves. chilesat.net has one IP number , but no corresponding reverse pointer. mx.chilesat.net is hosted on a server in Chile.

mx.chilesat.net
a records
 
+ 200.27.1.100 200.27.0.0/19 AS6429  
+ ---  

chilesat.net
a records
 
+ 200.31.43.33 200.31.32.0/19 AS6429 lemuy.chilesat.net
+ --- lemuy.chilesat.net
+ --- www.chilesat.net
ns records
ns.telmexchile.cl
+ 200.27.2.2 200.27.0.0/19 AS6429 -
+ --- -
ancud.chilepac.com
+ 200.31.43.34 200.31.32.0/19 AS6429 -
lemuy.chilesat.net
+ 200.31.43.33 200.31.32.0/19 AS6429 -
+ --- www.chilesat.net
mx records
mx.chilesat.net
+ 200.27.1.100 200.27.0.0/19 AS6429  
+ ---  
ip numbers of host
200.27.1.100
hostnames sharing ip with a-records
mx.telmexchile.cl
domains using this as mailserver
chilesat.net
domains using this as mailserver under another name
acermet.cl
afp-ag.cl
agricolaquillota.cl
agrolab.cl
airolite.cl
anepe.cl
applus.cl
artilec.cl
asesoriasonline.cl
autotest.cl
browse.cl
cadesur.cl
calito.cl
cals.cl
cienbrazos.com
conozcamas.cl
continental.cl
coopenorte.cl
credumontt.cl
dbnet.cl
econ.cl
ecse.cl
edeco.cl
elinte.cl
emecar.cl
endotec.cl
ferrocargo.cl
fidens.cl
firstcom.cl
grange.cl
hbriones.cl
heres.cl
idesol.cl
iimch.cl
indecsa.com
interphone.cl
italplast.cl
kronoschile.cl
larox.cl
mira.cl
petricio.cl
proyectoser.cl
punk.cl
radiox.cl
rdc.cl
reliper.cl
sauer.cl
siisa.com
tefra.cl
telmex.cl
telmexchile.cl
trinidad.cl
tusan.cl
virginia.cl
yusic.cl