Robtex

Up: 193.28.208.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.28.212.0/23
Down right: 193.28.214.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.28.212.10	PTR	mail.grunenthal.com
193.28.212.20	PTR	mx01.grunenthal.com
193.28.212.30	A	crp.grunenthal.com
193.28.212.44	A+PTR	grtsgw.grunenthal.com
193.28.212.65	A+PTR	mail2.grunenthal.com
193.28.212.65	A	mail1.fundacaogrunenthal.pt
193.28.212.65	A	mail2.grunenthal.com.pe
193.28.212.66	PTR	mail1.grunenthal.com
193.28.212.142	A+PTR	grtactivesync.grunenthal.com
193.28.212.167	A	mail.grunenthal.com