Robtex

Up: 218.103.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 218.103.40.0/23
Down right: 218.103.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
218.103.40.3	A	icsbackup.cathaypacific.com
218.103.40.10	A	ipvpn135010.netvigator.com
218.103.40.14	A+PTR	ipvpn135014.netvigator.com
218.103.40.33	PTR	eashkg.com.hk
218.103.40.33	A	ymca-coll.edu.hk
218.103.40.33	A	www.ymca-coll.edu.hk
218.103.40.91	A	ipvpn135091.netvigator.com
218.103.40.107	A	ipvpn135107.netvigator.com
218.103.40.129	A	ipvpn135129.netvigator.com
218.103.40.153	A	ipvpn135153.netvigator.com
218.103.40.163	A	ipvpn135163.netvigator.com
218.103.40.173	A+PTR	ipvpn135173.netvigator.com
218.103.42.26	A	ipvpn137026.netvigator.com
218.103.42.27	A+PTR	ipvpn137027.netvigator.com
218.103.42.41	A+PTR	ipvpn137041.netvigator.com
218.103.42.41	A	tommysiew.com
218.103.42.41	A	everprt.com
218.103.42.42	PTR	ipvpn137042.netvigator.com
218.103.42.43	PTR	ipvpn137043.netvigator.com
218.103.42.44	PTR	ipvpn137044.netvigator.com
218.103.42.44	A	ns3.aerocyber.com
218.103.42.44	A	mail.aerospacehk.com
218.103.42.110	A	ipvpn137110.netvigator.com
218.103.42.171	A	www.bkc.com.hk
218.103.42.172	PTR	barrack.bkc.com.hk
218.103.42.176	A+PTR	ipvpn137176.netvigator.com
218.103.42.189	A	ipvpn137189.netvigator.com
218.103.42.192	A+PTR	ipvpn137192.netvigator.com
218.103.42.234	A	ipvpn137234.netvigator.com
218.103.43.13	A	ipvpn138013.netvigator.com
218.103.43.33	A	ipvpn138033.netvigator.com
218.103.43.41	PTR	ipvpn138041.netvigator.com
218.103.43.41	A	cpsl.com.hk
218.103.43.44	A+PTR	ipvpn138044.netvigator.com
218.103.43.60	A+PTR	mail.maxsend.com.hk
218.103.43.65	A+PTR	smtp.anytours.com.hk
218.103.43.65	A	smtp.traveller.net
218.103.43.68	A+PTR	ipvpn138068.netvigator.com
218.103.43.141	A+PTR	ipvpn138141.netvigator.com
218.103.43.189	A	ipvpn138189.netvigator.com
218.103.43.207	A	ipvpn138207.netvigator.com
218.103.43.209	A	ipvpn138209.netvigator.com
218.103.43.211	A	ipvpn138211.netvigator.com
218.103.43.213	A	reg.nod32.com.hk
218.103.43.213	A	ipvpn138213.netvigator.com
218.103.43.215	A+PTR	ipvpn138215.netvigator.com
218.103.43.231	A	ipvpn138231.netvigator.com
218.103.43.237	A	ipvpn138237.netvigator.com
218.103.43.254	A	ipvpn138254.netvigator.com