Robtex

Up: 203.198.72.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.198.73.0/25
Down right: 203.198.73.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.198.73.1	A+PTR	001.73.198.203.static.netvigator.com
203.198.73.2	A+PTR	002.73.198.203.static.netvigator.com
203.198.73.3	A+PTR	003.73.198.203.static.netvigator.com
203.198.73.4	A+PTR	004.73.198.203.static.netvigator.com
203.198.73.5	A+PTR	005.73.198.203.static.netvigator.com
203.198.73.10	A+PTR	010.73.198.203.static.netvigator.com
203.198.73.10	A	smtp.materialchoice.com
203.198.73.10	A	smtp.atpco.com.hk
203.198.73.11	A+PTR	011.73.198.203.static.netvigator.com
203.198.73.12	A+PTR	012.73.198.203.static.netvigator.com
203.198.73.13	A+PTR	013.73.198.203.static.netvigator.com
203.198.73.17	PTR	017.73.198.203.static.netvigator.com
203.198.73.17	A	ns1.cytech.com
203.198.73.22	A+PTR	022.73.198.203.static.netvigator.com
203.198.73.22	A	xn--zc6ak3i.com
203.198.73.22	A	www.xn--2qux23cdywswe.com
203.198.73.25	A+PTR	mail.cytech.com
203.198.73.25	A	mail.cytronic.com
203.198.73.25	A	mx1.macnica.com
203.198.73.26	PTR	026.73.198.203.static.netvigator.com
203.198.73.26	A	www.cytech.com
203.198.73.26	A	cytronic.com
203.198.73.98	PTR	098.73.198.203.static.netvigator.com
203.198.73.113	A+PTR	mail.karce.com.hk
203.198.73.115	PTR	115.73.198.203.static.netvigator.com
203.198.73.115	A	countryclub.com.hk
203.198.73.115	A	countryclub.hk
203.198.73.116	A+PTR	116.73.198.203.static.netvigator.com
203.198.73.118	A	ipvpn020118.netvigator.com
203.198.73.119	PTR	119.73.198.203.static.netvigator.com
203.198.73.119	A	webmail.countryclub.hk
203.198.73.123	A	ipvpn020123.netvigator.com
203.198.73.162	A	www.npgps.edu.hk
203.198.73.178	A	ipvpn020178.netvigator.com
203.198.73.183	PTR	mail.pme8.com
203.198.73.183	PTR	mail2.pme8.com
203.198.73.189	A	ipvpn020189.netvigator.com
203.198.73.225	A	ipvpn020225.netvigator.com
203.198.73.229	A	ipvpn020229.netvigator.com
203.198.73.232	A	ipvpn020232.netvigator.com
203.198.73.237	A	wstudio.com.cn
203.198.73.241	PTR	mail.foster.com.hk