Robtex

Up: 218.188.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 218.188.20.0/23
Down right: 218.188.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
218.188.21.4	PTR	ablmcc.edu.hk
218.188.21.4	PTR	email.ablmcc.edu.hk
218.188.21.5	A	www.ablmcc.edu.hk
218.188.21.84	A	chss.edu.hk
218.188.21.85	A	mail.chms.edu.hk
218.188.21.116	A	www.hokshan.edu.hk
218.188.21.116	A	hokshan.edu.hk
218.188.21.145	A	mail.cneclmc.edu.hk
218.188.21.179	A+PTR	hpsgps.edu.hk
218.188.22.40	A	www.tmcss.edu.hk
218.188.22.43	A	mail.tmcss.edu.hk
218.188.22.82	A	campeonacademy.com
218.188.22.82	A	piccolomonte.com
218.188.22.229	A	www.ktgss.edu.hk
218.188.22.229	A	ktgss.edu.hk
218.188.22.229	A	mail.ktgss.edu.hk
218.188.22.235	A	email.ktgss.edu.hk
218.188.22.236	A	student.ktgss.edu.hk
218.188.22.236	A	mail.student.ktgss.edu.hk
218.188.23.34	PTR	lfis.edu.hk
218.188.23.56	A	mail.koalatechnology.com
218.188.23.56	A	koalatechnology.com
218.188.23.59	A	llsy.edu.hk
218.188.23.61	A	ulchina.org
218.188.23.65	A	intranet.llsy.edu.hk
218.188.23.66	PTR	lfis.edu.hk
218.188.23.122	A	cognitiohk.edu.hk
218.188.23.131	A	ns1.qesosa.edu.hk
218.188.23.131	A	host1.mavalmfg.com
218.188.23.131	A	ns1.qesfa.net
218.188.23.132	A	ns3.qesfa.net
218.188.23.132	A	304038.cn
218.188.23.132	A	*.robertaebasta.com
218.188.23.139	A	www.ss.qesosa.edu.hk
218.188.23.143	A	projectmanagementgame.net
218.188.23.228	PTR	www.puishing.hk
218.188.23.228	A	puishing.hk
218.188.23.228	A	www.puishing.edu.hk
218.188.23.229	PTR	puishing.edu.hk
218.188.23.230	PTR	mail.puishing.hk
218.188.23.230	PTR	elearning.puishing.hk
218.188.23.230	A	elearning.puishing.edu.hk
218.188.23.245	A	mail.cyps.edu.hk
218.188.23.246	A	www.cyps.edu.hk