Robtex

Up: 189.221.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 189.221.64.0/20
Down right: 189.221.80.0/20

IP	Type	Hostname
189.221.65.54	A+PTR	189.221.65.54.cable.dyn.cableonline.com.mx
189.221.65.67	A+PTR	189.221.65.67.cable.dyn.cableonline.com.mx
189.221.67.16	A+PTR	189.221.67.16.cable.dyn.cableonline.com.mx
189.221.73.107	A+PTR	189.221.73.107.cable.dyn.cableonline.com.mx
189.221.76.53	A+PTR	189.221.76.53.cable.dyn.cableonline.com.mx
189.221.76.228	A+PTR	189.221.76.228.cable.dyn.cableonline.com.mx
189.221.77.3	A+PTR	189.221.77.3.cable.dyn.cableonline.com.mx
189.221.78.71	A+PTR	189.221.78.71.cable.dyn.cableonline.com.mx
189.221.78.80	A+PTR	189.221.78.80.cable.dyn.cableonline.com.mx
189.221.78.115	A+PTR	189.221.78.115.cable.dyn.cableonline.com.mx
189.221.78.192	A+PTR	189.221.78.192.cable.dyn.cableonline.com.mx
189.221.79.166	PTR	189.221.79.166.cable.dyn.cableonline.com.mx
189.221.80.178	A+PTR	189.221.80.178.cable.dyn.cableonline.com.mx
189.221.82.108	A+PTR	189.221.82.108.cable.dyn.cableonline.com.mx
189.221.85.175	A+PTR	189.221.85.175.cable.dyn.cableonline.com.mx
189.221.86.135	PTR	189.221.86.135.cable.dyn.cableonline.com.mx
189.221.86.181	A+PTR	189.221.86.181.cable.dyn.cableonline.com.mx
189.221.88.51	A	189.221.88.51.cable.dyn.cableonline.com.mx
189.221.88.231	A+PTR	189.221.88.231.cable.dyn.cableonline.com.mx
189.221.90.50	PTR	189.221.90.50.cable.dyn.cableonline.com.mx
189.221.90.111	A	189.221.90.111.cable.dyn.cableonline.com.mx
189.221.91.150	A	189.221.91.150.cable.dyn.cableonline.com.mx
189.221.92.242	A+PTR	189.221.92.242.cable.dyn.cableonline.com.mx
189.221.94.218	A+PTR	189.221.94.218.cable.dyn.cableonline.com.mx
189.221.95.251	A+PTR	189.221.95.251.cable.dyn.cableonline.com.mx