Robtex

Up: 203.203.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.203.68.0/23
Down right: 203.203.70.0/23

IP	Type	Hostname
203.203.68.31	A+PTR	host-203-203-68-31.dynamic.kbtelecom.net
203.203.68.66	PTR	host-203-203-68-66.dynamic.kbtelecom.net
203.203.68.117	A	host-203-203-68-117.dynamic.kbtelecom.net
203.203.68.122	A+PTR	host-203-203-68-122.dynamic.kbtelecom.net
203.203.68.150	PTR	host-203-203-68-150.dynamic.kbtelecom.net
203.203.68.159	A+PTR	host-203-203-68-159.dynamic.kbtelecom.net
203.203.68.191	A	host-203-203-68-191.dynamic.kbtelecom.net
203.203.68.232	PTR	host-203-203-68-232.dynamic.kbtelecom.net
203.203.70.13	A+PTR	host-203-203-70-13.dynamic.kbtelecom.net
203.203.70.95	A	host-203-203-70-95.dynamic.kbtelecom.net
203.203.70.145	PTR	host-203-203-70-145.dynamic.kbtelecom.net
203.203.70.191	PTR	host-203-203-70-191.dynamic.kbtelecom.net
203.203.70.230	PTR	host-203-203-70-230.dynamic.kbtelecom.net