Robtex

Up: 1.6.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 1.6.0.0/21
Down right: 1.6.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
1.6.0.1	PTR	segment-1.6.sify.net
1.6.0.2	PTR	segment-1.6.sify.net
1.6.0.3	PTR	segment-1.6.sify.net
1.6.0.4	A	126.0.4-static.reverse.softlayer.com
1.6.0.6	A	126.0.6-static.reverse.softlayer.com
1.6.0.17	PTR	segment-1.6.sify.net
1.6.0.35	PTR	segment-1.6.sify.net
1.6.0.36	PTR	1-6-0-0.lan.sify.net
1.6.0.53	PTR	segment-1.6.sify.net
1.6.0.55	PTR	segment-1.6.sify.net
1.6.0.59	PTR	segment-1.6.sify.net
1.6.0.60	PTR	segment-1.6.sify.net
1.6.0.65	PTR	segment-1.6.sify.net
1.6.0.66	PTR	segment-1.6.sify.net
1.6.0.67	PTR	segment-1.6.sify.net
1.6.0.68	PTR	segment-1.6.sify.net
1.6.0.85	PTR	segment-1.6.sify.net
1.6.0.91	PTR	segment-1.6.sify.net
1.6.0.93	PTR	segment-1.6.sify.net
1.6.0.96	PTR	segment-1.6.sify.net
1.6.0.97	PTR	segment-1.6.sify.net
1.6.0.98	PTR	segment-1.6.sify.net
1.6.0.99	PTR	segment-1.6.sify.net
1.6.0.116	PTR	segment-1.6.sify.net
1.6.0.125	PTR	segment-1.6.sify.net
1.6.0.131	PTR	segment-1.6.sify.net
1.6.0.139	PTR	segment-1.6.sify.net
1.6.0.158	PTR	segment-1.6.sify.net
1.6.0.163	PTR	segment-1.6.sify.net
1.6.0.171	PTR	segment-1.6.sify.net
1.6.0.188	PTR	segment-1.6.sify.net
1.6.0.190	PTR	segment-1.6.sify.net
1.6.0.194	PTR	segment-1.6.sify.net
1.6.0.195	PTR	segment-1.6.sify.net
1.6.0.203	PTR	segment-1.6.sify.net
1.6.0.205	PTR	segment-1.6.sify.net
1.6.0.210	PTR	segment-1.6.sify.net
1.6.0.226	PTR	segment-1.6.sify.net
1.6.0.235	PTR	segment-1.6.sify.net
1.6.0.239	PTR	segment-1.6.sify.net
1.6.0.254	PTR	segment-1.6.sify.net
1.6.1.0	A	196.150-static.reverse.softlayer.com
1.6.1.0	A	126.130-static.reverse.softlayer.com
1.6.1.0	A	156.180-static.reverse.softlayer.com
1.6.1.80	A	smiles.happiestminds.com
1.6.1.80	A	smilescentral.happiestminds.com
1.6.2.0	A	136.230-static.reverse.softlayer.com
1.6.2.0	A	146.220-static.reverse.softlayer.com
1.6.2.0	A	146.230-static.reverse.softlayer.com
1.6.2.1	A	186.211-static.reverse.softlayer.com
1.6.2.74	A	126.2.74-static.reverse.softlayer.com
1.6.3.180	A	jyl-y.com
1.6.3.195	A	joyalukkasdigital.in
1.6.5.204	A	mail.sidbi.in
1.6.6.48	A	merchant.onlinelic.in
1.6.6.49	A	customer.onlinelic.in
1.6.6.212	A	merchant.licindia.in
1.6.8.63	A	126.8.63-static.reverse.softlayer.com
1.6.9.5	A	braz-qiigo.com
1.6.10.102	A+PTR	shyamindus.com
1.6.10.102	A	www.shyamindus.com
1.6.10.107	A	mail.shyamindus.com
1.6.12.58	A	126.12.58-static.reverse.softlayer.com
1.6.15.25	A	mail.apcob.org
1.6.15.130	A	nizamabaddccb.in
1.6.15.130	A	warangaldccb.in
1.6.15.130	A	adilabaddccb.in