Robtex

Up: 203.203.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 203.203.16.0/21
Down right: 203.203.24.0/21

IP	Type	Hostname
203.203.16.156	A	host-203-203-16-156.dynamic.kbtelecom.net
203.203.18.115	PTR	host-203-203-18-115.dynamic.kbtelecom.net
203.203.18.129	PTR	host-203-203-18-129.dynamic.kbtelecom.net
203.203.19.24	A	host-203-203-19-24.dynamic.kbtelecom.net
203.203.19.64	A	host-203-203-19-64.dynamic.kbtelecom.net
203.203.19.112	PTR	host-203-203-19-112.dynamic.kbtelecom.net
203.203.19.114	PTR	host-203-203-19-114.dynamic.kbtelecom.net
203.203.19.213	A	host-203-203-19-213.dynamic.kbtelecom.net
203.203.19.229	A	host-203-203-19-229.dynamic.kbtelecom.net
203.203.19.252	A	host-203-203-19-252.dynamic.kbtelecom.net
203.203.21.26	A	host-203-203-21-26.dynamic.kbtelecom.net
203.203.21.50	A	host-203-203-21-50.dynamic.kbtelecom.net
203.203.21.81	A	host-203-203-21-81.dynamic.kbtelecom.net
203.203.21.141	A	host-203-203-21-141.dynamic.kbtelecom.net
203.203.21.143	A	host-203-203-21-143.dynamic.kbtelecom.net
203.203.21.180	A	host-203-203-21-180.dynamic.kbtelecom.net
203.203.21.183	A	host-203-203-21-183.dynamic.kbtelecom.net
203.203.21.209	A+PTR	host-203-203-21-209.dynamic.kbtelecom.net
203.203.21.211	PTR	host-203-203-21-211.dynamic.kbtelecom.net
203.203.24.8	A	host-203-203-24-8.dynamic.kbtelecom.net
203.203.24.24	A	host-203-203-24-24.dynamic.kbtelecom.net
203.203.24.118	A	host-203-203-24-118.dynamic.kbtelecom.net
203.203.24.123	A	host-203-203-24-123.dynamic.kbtelecom.net
203.203.26.48	PTR	host-203-203-26-48.dynamic.kbtelecom.net
203.203.28.136	A	host-203-203-28-136.dynamic.kbtelecom.net
203.203.30.7	A	host-203-203-30-7.dynamic.kbtelecom.net
203.203.30.11	A	host-203-203-30-11.dynamic.kbtelecom.net
203.203.30.62	A	host-203-203-30-62.dynamic.kbtelecom.net
203.203.30.77	A	host-203-203-30-77.dynamic.kbtelecom.net
203.203.30.196	A	host-203-203-30-196.dynamic.kbtelecom.net