Robtex

Up: 213.135.230.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.135.231.0/25
Down right: 213.135.231.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.135.231.2	A+PTR	mail.syrdallheem.lu
213.135.231.17	PTR	ip-213-135-231-17.static.luxdsl.pt.lu
213.135.231.17	A	mail.paiperleck.lu
213.135.231.17	A	mail.trail-inn.com
213.135.231.19	A	mail.majardinerie.com
213.135.231.20	A+PTR	remote.notaire-mines.lu
213.135.231.40	PTR	mail.brw.lu
213.135.231.42	A	softwareunion.homeip.net
213.135.231.44	A+PTR	mail.reseaupsy.lu
213.135.231.44	A	adsl.reseaupsy.lu
213.135.231.56	A	mail.prosys.lu
213.135.231.63	A+PTR	mail.belvedere.lu
213.135.231.89	A+PTR	nas.mull.es
213.135.231.89	A	ttnet.mull.es
213.135.231.94	PTR	ip-213-135-231-94.static.luxdsl.pt.lu
213.135.231.94	A	smtp.opexia.lu
213.135.231.100	PTR	webmail.eal.lu
213.135.231.101	A+PTR	exchange.format.lu
213.135.231.108	A	remote.krieger-avocats.lu
213.135.231.130	A	mail.aeppeltaart.lu
213.135.231.132	PTR	ip-213-135-231-132.static.luxdsl.pt.lu
213.135.231.132	A	smtp.themisrealty.ch
213.135.231.132	A	mx2.eef.lu
213.135.231.160	A	serverguru.xyz
213.135.231.164	PTR	ip-213-135-231-164.static.luxdsl.pt.lu
213.135.231.164	A	mx1.embsys.lu
213.135.231.181	A+PTR	mail.cba.lu
213.135.231.187	A+PTR	mail.mgm.lu
213.135.231.191	PTR	ip-213-135-231-191.static.luxdsl.pt.lu
213.135.231.191	A	remote.gross.lu
213.135.231.228	PTR	ip-213-135-231-228.static.luxdsl.pt.lu
213.135.231.228	A	mail.notaire-reuter.lu
213.135.231.237	A+PTR	mail.atarch.lu