Robtex

Up: 181.9.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 181.9.64.0/19
Down right: 181.9.96.0/19

IP	Type	Hostname
181.9.73.169	A	host169.181-9-73.telecom.net.ar
181.9.86.172	A+PTR	host172.181-9-86.telecom.net.ar
181.9.100.177	A+PTR	host177.181-9-100.telecom.net.ar
181.9.120.20	A+PTR	host20.181-9-120.telecom.net.ar
181.9.121.10	A+PTR	host10.181-9-121.telecom.net.ar
181.9.121.189	A+PTR	host189.181-9-121.telecom.net.ar
181.9.121.191	PTR	host191.181-9-121.telecom.net.ar
181.9.121.224	A+PTR	host224.181-9-121.telecom.net.ar
181.9.122.191	A+PTR	host191.181-9-122.telecom.net.ar
181.9.123.57	PTR	host57.181-9-123.telecom.net.ar
181.9.123.102	A+PTR	host102.181-9-123.telecom.net.ar
181.9.123.245	A+PTR	host245.181-9-123.telecom.net.ar
181.9.125.218	A+PTR	host218.181-9-125.telecom.net.ar
181.9.127.3	A+PTR	host3.181-9-127.telecom.net.ar