go
smtp-01.servidoresdns.net has one IP number , which also has a corresponding reverse pointer. arsys.wuay.com, arsys.talento4you.com and correo.suministrostextiles.com cnames to this hostname. usp.es, fmn.es, aas.es, a2a2.es, assi.es and at least 100 other hosts use this as a mailserver. servidoresdns.net is a domain controlled by two nameservers at servidoresdns.net themselves. They are on different IP networks. Incoming mail for servidoresdns.net is handled by three mailservers. All of them are on the same IP network. smtp-01.servidoresdns.net is hosted on a server in Spain.

smtp-01.servidoresdns.net
a records
 
+ 82.223.191.131 82.223.184.0/21 AS20718 -
+ --- -

servidoresdns.net
ns-soa records
atlante.servidoresdns.net
+ 217.76.128.10 217.76.128.0/19 AS20718 -
+ --- -
ns records
atlante.servidoresdns.net
+ 217.76.128.10 217.76.128.0/19 AS20718 -
+ --- -
prometeo.servidoresdns.net
+ 82.223.191.10 82.223.184.0/21 AS20718 -
mx records
smtp-30.servidoresdns.net
+ 217.76.150.191 217.76.128.0/19 AS20718  
+ ---  
jupiter.arsys.es
+ 217.76.128.76 217.76.128.0/19 AS20718 -
+ --- -
mercurio.arsys.es
+ 217.76.128.83 217.76.128.0/19 AS20718 -
ip numbers of host
82.223.191.131
ptrs of ip numbers
smtp-01.servidoresdns.net
ip numbers using ptr to this host
82.223.191.131
hostnames pointing here by cname
arsys.talento4you.com
arsys.wuay.com
correo.suministrostextiles.com
domains using this as mailserver
101pisos.com
3mym.com
a2a2.es
a2i-digital.com
a3mj.com
aas.es
aatranslations.com
abacotech.com
abadiademedrano.com
abemark.com
abijou.com
aboinleitner.com
acceda.com
accentjuridic.com
adrutas.com
afigualada.com
afycet.com
aibcnet.com
aislaglas.com
alcamar2000.com
alcordelroble.com
aliatlante.com
alibri.es
alvalar.com
artstudio.es
asesoriaancora.com
assi.es
ateneu-inf.com
ateneuinstructiu.com
audioacustica.net
avsoft.es
aymarquitec.biz
aytovilladecanes.com
basab.es
bcnconsulting.net
bigsofa.biz
bitema.com
bongspain.com
bufete-baro.com
callejas.biz
campingelrio.com
centrosevillacongresos.com
coblalaprincipaldeporqueres.com
combonianos.com
complejolavega.com
construccionespadera.com
cota.es
desguacesmora.com
dreamsandadventures.com
e-cultura.com.es
edaddeoro.com
eicad.com
elbarcodespedidas.com
eltorreondelajuliana.com
enermes.com
esteticacirugia.es
estiloalmazan.com
eurocruz.com
fanatik-visual.com
fedeto.es
fenaco.biz
fitogreen.com
flatsinbarcelona.com
fmn.es
frado.net
generalestudis.com
gestifen.com
gloriafuertes.org
golfmoon.com
greemoil.es
grupbalana.com
grupinformatic.com
guanabanajam.com
guitarraspicado.com
harbourclubtfe.com
iasur.com
imaengine.com
imtectrans.com
incisa.es
industriasjaguar.com
infoplusisp.com
ingenieria-civil.org
institucionteresiana.org
jmcanizares.com
jordidauder.com
juanbarnils.com
k2sl.com
kynoto.com
lascarabelas.com
latiendadelnavegante.com
llavina.com
losherran.com
lospalancares.com
majaika.com
mascasadevall.com
maxmedios.com
mercauto.net
mikel-luzea.com
modavisual.com
moehs.es
musicalia.com
netandcommerce.com
patronathabitatge.com
permotor.com
pharus.biz
plazamayor.net
rohepi.com
salou.org
sindominio.org
stponline.com
sucesosenlinea.com
sunmarineibiza.com
tesarte.com
tintaymedia.com
unimusica.net
usp.es
velesevents.com
vvapardillo.org
webxp.es
wehbe.es