Robtex

Up: 203.198.182.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.198.183.0/25
Down right: 203.198.183.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.198.183.1	A+PTR	001.183.198.203.static.netvigator.com
203.198.183.2	A+PTR	002.183.198.203.static.netvigator.com
203.198.183.3	A+PTR	003.183.198.203.static.netvigator.com
203.198.183.4	A+PTR	004.183.198.203.static.netvigator.com
203.198.183.5	A+PTR	005.183.198.203.static.netvigator.com
203.198.183.10	PTR	010.183.198.203.static.netvigator.com
203.198.183.11	A+PTR	011.183.198.203.static.netvigator.com
203.198.183.12	A+PTR	012.183.198.203.static.netvigator.com
203.198.183.13	A+PTR	013.183.198.203.static.netvigator.com
203.198.183.14	A+PTR	014.183.198.203.static.netvigator.com
203.198.183.19	PTR	019.183.198.203.static.netvigator.com
203.198.183.19	A	ipvpn058019.netvigator.com
203.198.183.19	A	www.hkroman.com
203.198.183.20	A	mail.hkroman.com
203.198.183.28	PTR	028.183.198.203.static.netvigator.com
203.198.183.34	A	ipvpn058034.netvigator.com
203.198.183.36	A	mailhkmt1.newellco.com
203.198.183.57	A	ipvpn058057.netvigator.com
203.198.183.58	A	ipvpn058058.netvigator.com
203.198.183.65	PTR	065.183.198.203.static.netvigator.com
203.198.183.65	A	ipvpn058065.netvigator.com
203.198.183.69	A	web.ftesps.edu.hk
203.198.183.93	A	ipvpn058093.netvigator.com
203.198.183.138	A	ipvpn058138.netvigator.com
203.198.183.139	A	ipvpn058139.netvigator.com
203.198.183.146	A	mail.dcwhk.com
203.198.183.148	A	mail.bouyguesasia.com
203.198.183.148	A	bymsghu14.bouyguesasia.com
203.198.183.148	A	mail.dragageshk.com
203.198.183.152	A+PTR	bymsghu16a.bouyguesasia.com
203.198.183.152	A+PTR	mail.bouyguesasia.com
203.198.183.152	A	mail.dragageshk.com
203.198.183.161	A	ipvpn058161.netvigator.com
203.198.183.221	PTR	221.183.198.203.static.netvigator.com
203.198.183.221	A	ipvpn058221.netvigator.com