Robtex

Up: 203.123.144.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.123.144.0/25
Down right: 203.123.144.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.123.144.84	PTR	lease84.mumbai-144.pacific.net.in
203.123.144.84	A	mx2.omegrown.in
203.123.144.84	A	mx2.inxnetwork.in
203.123.144.87	PTR	lease87.mumbai-144.pacific.net.in
203.123.144.88	PTR	lease88.mumbai-144.pacific.net.in
203.123.144.92	PTR	lease92.mumbai-144.pacific.net.in
203.123.144.115	PTR	lease115.mumbai-144.pacific.net.in
203.123.144.129	PTR	lease129.mumbai-144.pacific.net.in
203.123.144.131	PTR	lease131.mumbai-144.pacific.net.in
203.123.144.154	PTR	lease154.mumbai-144.pacific.net.in
203.123.144.157	PTR	mx-203-123-144-157.rossarimail.com
203.123.144.158	PTR	zcs.rossarimail.com
203.123.144.170	PTR	mail.bellsoftinc.com
203.123.144.194	PTR	lease194.mumbai-144.pacific.net.in
203.123.144.195	PTR	lease195.mumbai-144.pacific.net.in
203.123.144.249	PTR	lease249.mumbai-144.pacific.net.in