Robtex

Up: 203.203.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.203.84.0/23
Down right: 203.203.86.0/23

IP	Type	Hostname
203.203.84.175	A+PTR	host-203-203-84-175.dynamic.kbtelecom.net
203.203.84.176	PTR	host-203-203-84-176.dynamic.kbtelecom.net
203.203.84.225	PTR	host-203-203-84-225.dynamic.kbtelecom.net
203.203.84.236	A+PTR	host-203-203-84-236.dynamic.kbtelecom.net
203.203.85.3	PTR	host-203-203-85-3.dynamic.kbtelecom.net
203.203.85.9	A	host-203-203-85-9.dynamic.kbtelecom.net
203.203.85.137	PTR	host-203-203-85-137.dynamic.kbtelecom.net
203.203.85.140	A	host-203-203-85-140.dynamic.kbtelecom.net
203.203.85.141	PTR	host-203-203-85-141.dynamic.kbtelecom.net
203.203.86.55	PTR	host-203-203-86-55.dynamic.kbtelecom.net