Robtex

Up: 200.61.136.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.61.137.0/25
Down right: 200.61.137.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.61.137.21	PTR	21.137.61.200.static.host.baehost.com.ar
200.61.137.21	A	mail.fbnc.com.ar
200.61.137.21	A	fbnc.com.ar
200.61.137.23	PTR	23.137.61.200.host.ifxnw.com.ar
200.61.137.23	A	cintelec.com.ar
200.61.137.23	A	cintelink.com.ar
200.61.137.26	A	prowide.com.ar
200.61.137.29	PTR	29.137.61.200.host.baehost.com.ar
200.61.137.29	A	29.137.61.200.host.ifxnw.com.ar
200.61.137.30	PTR	30.137.61.200.host.ifxnw.com.ar
200.61.137.33	A	mail.wiogarage.com
200.61.137.33	A	wiogarage.com
200.61.137.33	A	*.wiogarage.com
200.61.137.61	A+PTR	mx.lumenac.com.ar
200.61.137.74	A+PTR	74.137.61.200.host.ifxnw.com.ar
200.61.137.83	PTR	mail.silicomlan.com.ar
200.61.137.98	A+PTR	98.137.61.200.host.ifxnw.com.ar
200.61.137.114	PTR	114.137.61.200.host.ifxnw.com.ar
200.61.137.114	A	mail.posadaelcorral.com
200.61.137.114	A	mail.imhotepsa.com.ar
200.61.137.190	PTR	www.baehost.com
200.61.137.190	A	baeservidores.com
200.61.137.190	A	servidorvirtualargentina.com
200.61.137.210	PTR	210.137.61.200.host.ifxnw.com.ar
200.61.137.230	PTR	230.137.61.200.static.ifxnw.com.ar
200.61.137.230	A	mx2.mundial.com.ar
200.61.137.242	A+PTR	242.137.61.200.host.ifxnw.com.ar