Robtex

Up: 203.153.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.153.43.50	A	smtp.railtelindia.com
203.153.43.51	A	smtp1.railtelindia.com
203.153.43.55	A+PTR	mail.railtelindia.com
203.153.43.55	A	mail.rcil.gov.in
203.153.43.55	A	email.railtelindia.com
203.153.43.65	A+PTR	ns1.rcil.gov.in
203.153.43.65	A	ns1.railtelindia.in
203.153.43.65	A	ns1.sac.gov.in
203.153.43.66	A	ns2.nmrl.res.in
203.153.43.74	PTR	ndls2.railtelindia.com
203.153.43.75	PTR	smtp2.railtelindia.com
203.153.43.128	PTR	mail.railwire.org
203.153.43.128	A	mx1.rcil.gov.in
203.153.43.129	PTR	ws129-43-153-203.rcil.gov.in
203.153.43.129	A	email.railtelindia.com
203.153.43.130	PTR	email.railtelindia.com
203.153.43.130	PTR	mx3.mrvc.gov.in
203.153.43.130	A+PTR	mx3.rcil.gov.in
203.153.43.178	A	speedtest.ggn.rcil.gov.in
203.153.43.238	PTR	ws238-43-153-203.rcil.gov.in