Robtex

Up: 141.101.242.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 141.101.243.0/25
Down right: 141.101.243.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
141.101.243.43	PTR	isa01-tmg.onyx-team.com
141.101.243.43	A	mail.onyx-com.ru
141.101.243.43	A	mail.onyx-team.com
141.101.243.57	A+PTR	cas.onyx-team.com
141.101.243.57	A	onyx-team.com
141.101.243.131	A+PTR	smtp1.love-sl.ru
141.101.243.131	A	smtp.love-sl.com
141.101.243.137	PTR	smtp.onyx-team.com
141.101.243.137	A	smtp.yourtimefactory.com
141.101.243.137	A	smtp.linea-gold.com
141.101.243.168	A+PTR	smtp1.onyx-team.com
141.101.243.178	PTR	access-1-floor.lw.pat.onyx-team.com
141.101.243.183	A+PTR	smtp4.onyx-team.com
141.101.243.185	A+PTR	sdo.onyx-team.com