Robtex

Up: 80.90.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 80.90.41.0/25
Down right: 80.90.41.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.90.41.5	A+PTR	80.90.41.5.mixvoip.solutions
80.90.41.5	A	mail.lms.lu
80.90.41.5	A	mail.navilux.net
80.90.41.24	PTR	80.90.41.24.mixvoip.solutions
80.90.41.24	A	mail.lusis.lu
80.90.41.24	A	mail.topics.lu
80.90.41.32	A	tmlux.net
80.90.41.53	A	webmail.mcsquare.lu
80.90.41.56	A+PTR	mail.technoprocess.lu
80.90.41.56	A	technoprocess.lu
80.90.41.63	A+PTR	mail.fbc.lu
80.90.41.75	A+PTR	mail1.koehl-sarl.eu
80.90.41.75	A	mail2.koehl-sarl.eu
80.90.41.76	A+PTR	mail1.koehl-mb.eu
80.90.41.76	A	mail2.koehl-mb.eu
80.90.41.76	A	mail1.en-neo.eu
80.90.41.77	PTR	webserver.nestlux.lu
80.90.41.77	A	nestlux.lu
80.90.41.77	A	soldpq.com
80.90.41.87	A	proxy.amer-sil.com
80.90.41.112	A	streetfighter-fr.com
80.90.41.112	A	mail.aj-ja.be