Robtex

Up: 192.23.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 192.23.220.0/23
Down right: 192.23.222.0/23

IP	Type	Hostname
192.23.220.185	A+PTR	bjcacd-220-185.slb.com
192.23.221.14	A	bjcacd-221-14.slb.com
192.23.222.16	A+PTR	bjcacd-222-16.slb.com
192.23.222.248	A	bjcacd-222-248.slb.com
192.23.222.252	A	bjcacd-222-252.slb.com
192.23.223.40	A	bjcacd-223-40.slb.com
192.23.223.158	A+PTR	bjcacd-223-158.slb.com
192.23.223.161	A	bjcacd-223-161.slb.com
192.23.223.221	A	bjcacd-223-221.slb.com