Robtex

Up: 103.28.142.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 103.28.143.0/25
Down right: 103.28.143.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.28.143.3	A+PTR	imssdr.issl.co.in
103.28.143.3	A	imssdr.isslcpg.com
103.28.143.3	A	ns3.ilfsdp.com
103.28.143.15	A+PTR	imsvadr.issl.co.in
103.28.143.42	PTR	webmail.issl.in
103.28.143.42	A+PTR	mx.issl.in