Robtex

Up: 72.168.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 72.168.64.0/22
Down right: 72.168.68.0/22

IP	Type	Hostname
72.168.65.9	PTR	host7216800965.direcway.com
72.168.65.126	A	nykbi.com
72.168.67.26	PTR	host72168002667.direcway.com
72.168.67.106	PTR	host721680010667.direcway.com
72.168.67.168	PTR	host721680016867.direcway.com
72.168.67.249	PTR	host721680024967.direcway.com
72.168.68.1	PTR	host7216800168.direcway.com
72.168.68.9	PTR	host7216800968.direcway.com