Robtex

Up: 124.124.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 124.124.20.0/23
Down right: 124.124.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
124.124.20.15	A+PTR	smtp.sivagroup.in
124.124.20.21	A	sivagroup.in
124.124.20.21	A	www.svl.co.in
124.124.20.21	A	svl.co.in
124.124.20.25	A	mail.sivagroup.in
124.124.20.29	PTR	mail02.winwind.com
124.124.20.29	A	mail2.winwind.com
124.124.20.30	A+PTR	mail02.sivagroup.in
124.124.20.30	A	mail02.sivabulk.com
124.124.20.30	A	mail02.sig.co.in
124.124.20.74	PTR	smauto.co.in
124.124.20.76	PTR	smauto.co.in
124.124.20.77	A	mail.smauto.co.in
124.124.20.149	PTR	maila.e-zest.in
124.124.20.162	A	smartschoolbustracking.com
124.124.22.204	PTR	mail.sskinfotech.com
124.124.23.165	A	www.pvgcoetonline.org
124.124.23.165	A	pvgcoetonline.org
124.124.23.227	A	helo.co.in
124.124.23.228	PTR	webmail.askari.co.in
124.124.23.229	PTR	smtp.askari.co.in