Robtex

Up: 194.39.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 194.39.72.0/23
Down right: 194.39.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.39.74.65	PTR	m7-beumer-ge-1-3-0.beumer.com
194.39.74.69	A+PTR	fw.beumer.com
194.39.74.88	PTR	webmail.beumer.com
194.39.74.214	A	sip.beumer.com
194.39.74.224	A	webmail.beumergroup.com
194.39.74.224	A	webmail.beumer.com
194.39.74.224	A	autodiscover.beumergroup.com
194.39.74.234	A	cag.beumer.com
194.39.74.239	A	lyncdiscover.beumer.com