Robtex

Up: 58.185.88.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 58.185.92.0/23
Down right: 58.185.94.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
58.185.92.34	A	mail.pcsvms.com.sg
58.185.92.35	A	pcsvms.com.sg
58.185.92.35	A	www.pcsvms.com.sg
58.185.93.29	A	ns2.wnsvc.com
58.185.93.52	PTR	ckhnotes.ckh.com.sg
58.185.93.52	A	www.chankokhong.com.sg
58.185.93.52	A	chankokhong.com.sg
58.185.93.53	A	melvillepark.sg
58.185.93.54	PTR	smtp.chankokhong.com.sg
58.185.93.100	PTR	bbsmail.bbspr.com.sg
58.185.93.132	A+PTR	email.zicomgroup.com
58.185.93.132	A	mail.orionsi.com
58.185.93.132	A	mail.cescoaustralia.com
58.185.93.139	A	mailgateway.zicomgroup.com
58.185.93.149	PTR	barracuda.rokko.com.sg
58.185.93.252	A	mail1.ipacademy.com.sg
58.185.94.98	A	mail.securitymanagement.com.sg
58.185.94.99	A	mail.securitymanagement.sg
58.185.95.11	A+PTR	mx02.peceng.com
58.185.95.119	A	nanoappstore.com
58.185.95.194	A	mavenm.com
58.185.95.199	PTR	iprac.com
58.185.95.199	PTR	saper-malaysia.com
58.185.95.199	PTR	insas.net