Robtex

Up: 200.49.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 200.49.80.0/23
Down right: 200.49.82.0/23

IP	Type	Hostname
200.49.82.153	A	host082153.metrored.net.ar
200.49.83.8	PTR	petrel.faa.mil.ar
200.49.83.15	PTR	mailserver.faa.mil.ar
200.49.83.16	PTR	faa.mil.ar
200.49.83.35	PTR	host083035.static.metrored.net.ar
200.49.83.35	A	mx15.nic.gob.ar
200.49.83.116	A	host083116.metrored.net.ar
200.49.83.167	A	host083167.metrored.net.ar
200.49.83.172	PTR	host083172.static.telmex.net.ar
200.49.83.192	A	host083192.metrored.net.ar
200.49.83.194	A+PTR	mail.mercadodeliniers.com.ar
200.49.83.194	A	www.mercadodeliniers.com.ar
200.49.83.194	A	mercadodeliniers.com.ar
200.49.83.205	A	webtest.arcor.com.ar
200.49.83.249	PTR	host083249.static.metrored.net.ar