Robtex

Up: 123.202.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 123.202.48.0/23
Down right: 123.202.50.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.202.48.95	A	123202048095.ctinets.com
123.202.48.134	A	mail.shishi-yupu.com
123.202.48.189	A	123202048189.ctinets.com
123.202.48.234	A	123202048234.ctinets.com
123.202.48.246	A+PTR	123202048246.ctinets.com
123.202.49.162	A	owa.kingsict.com
123.202.49.166	A	123202049166.ctinets.com
123.202.49.179	A+PTR	123202049179.ctinets.com
123.202.49.207	A	123202049207.ctinets.com
123.202.50.6	A+PTR	123202050006.ctinets.com
123.202.50.89	A	pop.hauyang.com
123.202.50.162	A	123202050162.ctinets.com
123.202.50.205	A+PTR	123202050205.ctinets.com
123.202.50.205	A	inanin.com
123.202.50.249	PTR	123202050249.ctinets.com
123.202.50.249	A	pop.hauyang.com
123.202.50.249	A	imap.hauyang.com
123.202.51.30	A	duoerwang.com
123.202.51.82	A+PTR	123202051082.ctinets.com
123.202.51.124	A	123202051124.ctinets.com
123.202.51.145	A	123202051145.ctinets.com
123.202.51.161	A+PTR	123202051161.ctinets.com
123.202.51.161	A	hki8.com
123.202.51.161	A	mail.hki8.com
123.202.51.179	A	123202051179.ctinets.com
123.202.51.203	A	123202051203.ctinets.com
123.202.51.229	A+PTR	123202051229.ctinets.com
123.202.51.229	A	www.bcgame.hk
123.202.51.229	A	bcgame.hk