Robtex

Up: 210.18.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 210.18.56.0/23
Down right: 210.18.58.0/23

IP	Type	Hostname
210.18.56.16	PTR	210.18.56.16.sify.net
210.18.56.75	PTR	mail.axisitt.com
210.18.56.178	PTR	210.18.56.178.sify.net
210.18.56.180	A	safexpress.net
210.18.56.180	A	www.safexpress.net
210.18.56.181	A	210.18.56.181.sify.net
210.18.56.190	A+PTR	210.18.56.190.sify.net
210.18.57.15	A+PTR	mail.alliancegs.com
210.18.57.16	PTR	210.18.57.16.sify.net
210.18.57.16	A	silkmob.com
210.18.57.40	A+PTR	210.18.57.40.sify.net
210.18.57.248	PTR	210.18.57.248.sify.net
210.18.57.255	A+PTR	210.18.57.255.sify.net
210.18.59.0	A	210.18.59.0.sify.net
210.18.59.18	A	artechsoft.co.in
210.18.59.18	A	www.artechsoft.co.in
210.18.59.19	A	mail.lmngreen.com
210.18.59.21	PTR	210.18.59.21.sify.net