Robtex

Up: 221.135.62.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 221.135.62.0/26
Down right: 221.135.62.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
221.135.62.10	PTR	221-135-62-10.sify.net
221.135.62.11	PTR	221-135-62-11.sify.net
221.135.62.12	PTR	221-135-62-12.sify.net
221.135.62.29	PTR	221-135-62-29.sify.net
221.135.62.30	PTR	221-135-62-30.sify.net
221.135.62.32	PTR	221-135-62-32.sify.net
221.135.62.33	A+PTR	bs.bsmail.in
221.135.62.33	A	mx.smartinvestor.in
221.135.62.33	A	mx1.bsmail.in
221.135.62.34	A+PTR	smtpmum.business-standard.com
221.135.62.37	A+PTR	smtpmum.bsmail.in
221.135.62.38	PTR	221-135-62-38.sify.net
221.135.62.38	A	www.bsmail.in
221.135.62.38	A	business-standard.net.in
221.135.62.47	PTR	221-135-62-47.sify.net
221.135.62.56	PTR	221-135-62-56.sify.net
221.135.62.57	PTR	221-135-62-57.sify.net
221.135.62.67	PTR	221-135-62-67.sify.net
221.135.62.69	PTR	221-135-62-69.sify.net
221.135.62.70	PTR	221-135-62-70.sify.net
221.135.62.71	PTR	221-135-62-71.sify.net
221.135.62.75	PTR	221-135-62-75.sify.net
221.135.62.77	PTR	221-135-62-77.sify.net
221.135.62.79	PTR	221-135-62-79.sify.net
221.135.62.80	PTR	221-135-62-80.sify.net
221.135.62.83	PTR	221-135-62-83.sify.net
221.135.62.87	PTR	221-135-62-87.sify.net
221.135.62.90	PTR	221-135-62-90.sify.net
221.135.62.97	PTR	221-135-62-97.sify.net
221.135.62.103	PTR	221-135-62-103.sify.net
221.135.62.115	PTR	221-135-62-115.sify.net
221.135.62.117	PTR	221-135-62-117.sify.net
221.135.62.118	PTR	221-135-62-118.sify.net
221.135.62.119	PTR	221-135-62-119.sify.net
221.135.62.122	PTR	221-135-62-122.sify.net