Robtex

Up: 203.80.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.80.80.0/23
Down right: 203.80.82.0/23

IP	Type	Hostname
203.80.80.5	A	203080080005.ctinets.com
203.80.80.14	A+PTR	203080080014.ctinets.com
203.80.80.113	A	203080080113.ctinets.com
203.80.80.185	A	203080080185.ctinets.com
203.80.81.68	A+PTR	203080081068.ctinets.com
203.80.81.85	A+PTR	203080081085.ctinets.com
203.80.81.85	A	elpagroup.com
203.80.81.133	A+PTR	203080081133.ctinets.com
203.80.81.147	A	203080081147.ctinets.com
203.80.81.164	A+PTR	203080081164.ctinets.com
203.80.81.165	A+PTR	203080081165.ctinets.com
203.80.81.169	PTR	203080081169.ctinets.com
203.80.81.178	A	hksolo.com
203.80.81.246	A	sdr8.com
203.80.83.67	A	203080083067.ctinets.com
203.80.83.82	A	203080083082.ctinets.com
203.80.83.190	A	203080083190.ctinets.com