Robtex

Up: 49.248.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 49.248.36.0/23
Down right: 49.248.38.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
49.248.36.2	PTR	smtp.ttml.co.in
49.248.36.69	A+PTR	mail.greshma.com
49.248.36.85	PTR	smtp.ttml.co.in
49.248.36.94	PTR	smtp.ttml.co.in
49.248.36.94	A	mail.commtelnetworks.co.in
49.248.36.107	A	odin.m3multiple.in
49.248.36.109	PTR	m3multiple.in
49.248.36.109	PTR	backoffice.m3multiple.in
49.248.36.109	PTR	soham.m3multiple.in
49.248.36.186	PTR	smtp.ttml.co.in
49.248.36.242	PTR	smtp.ttml.co.in
49.248.36.243	PTR	smtp.ttml.co.in
49.248.37.8	PTR	smtp.ttml.co.in
49.248.37.18	PTR	exmail.servpro.in
49.248.37.26	A	mail.npavteam.net
49.248.37.26	A	npavteam.net
49.248.37.66	PTR	smtp.ttml.co.in
49.248.37.85	PTR	smtp.ttml.co.in
49.248.37.203	A	psjsecurities.com
49.248.37.204	PTR	smtp.ttml.co.in
49.248.37.204	A	mail.psjsecurities.com
49.248.37.204	A	allmailindia.com
49.248.38.50	PTR	smtp.ttml.co.in
49.248.38.58	PTR	smtp.ttml.co.in
49.248.38.82	PTR	smtp.ttml.co.in
49.248.38.84	PTR	smtp.ttml.co.in
49.248.38.93	PTR	smtp.ttml.co.in
49.248.38.96	PTR	smtp.ttml.co.in
49.248.38.137	PTR	smtp.ttml.co.in
49.248.38.203	A	mail.ultraengineers.com
49.248.38.210	PTR	email.opc.co.in
49.248.38.211	PTR	smtp.ttml.co.in
49.248.38.211	A	email.opc.co.in
49.248.38.234	PTR	smtp.ttml.co.in
49.248.39.2	PTR	smtp.ttml.co.in
49.248.39.2	A	mail.shraddhagroup.org
49.248.39.51	A	hybridinfotec.com
49.248.39.210	A	bytzsoft.org