Robtex

Up: 12.175.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 12.175.16.0/23
Down right: 12.175.18.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
12.175.16.2	PTR	mail.glastel.net
12.175.16.4	A	name1.sekisui-sc.com
12.175.16.5	A	name2.sekisui-sc.com
12.175.16.6	A	advasol.com
12.175.16.6	A	sekisui-sc.net
12.175.16.132	A	mail.okeefewood.com
12.175.16.163	A	barracuda.goldcross.org
12.175.18.13	A	wowcitrix.com
12.175.19.3	A	openvpn.logicare.com
12.175.19.5	A	tsp.secure.logicare.com
12.175.19.5	A	kryptiq-demo.logicare.com
12.175.19.9	A	engage.logicare.com
12.175.19.226	A	primadatainc.com
12.175.19.226	A	mail.primadatainc.com
12.175.19.226	A	mail.primadatallc.com
12.175.19.228	A	mail.prima-data.com