Robtex

Up: 203.123.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.123.40.0/23
Down right: 203.123.42.0/23

IP	Type	Hostname
203.123.41.25	PTR	203.123.41.25.reverse.spectranet.in
203.123.41.38	PTR	203.123.41.38.reverse.spectranet.in
203.123.41.45	A+PTR	mx2mail.networthaddeco.com
203.123.41.45	A	mail.networthaddeco.com
203.123.41.76	PTR	mail2.kamaschachter.com
203.123.41.102	PTR	block-203.123.41.rev.spectranet.in
203.123.41.102	A	cabonphone.com
203.123.41.102	A	liveminds.in
203.123.41.242	PTR	pool-203.123.41.rev.spectranet.in
203.123.41.246	A	epslave.exacare.com.au
203.123.42.205	PTR	203.123.42.205.reverse.spectranet.in