Robtex

Up: 58.185.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 58.185.40.0/23
Down right: 58.185.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
58.185.40.210	PTR	mail.arplc.com.sg
58.185.40.243	A+PTR	smtp.crystaltime.com.sg
58.185.40.243	A	smtp.crystaltime.com.my
58.185.41.60	A+PTR	mail.sif.org.sg
58.185.41.131	A	www.ibsingremit.sg
58.185.41.131	A	ibsingremit.sg
58.185.41.132	A	indianbank.sg
58.185.41.132	A	www.indianbank.sg
58.185.41.141	A	*.indianbank-singapore.com
58.185.41.141	A	mail.indianbank-singapore.com
58.185.41.141	A	indianbank-singapore.com
58.185.41.178	A	oe2.com.sg
58.185.41.198	PTR	mail.singaporeflyer.com
58.185.41.198	PTR	mailsvr.singaporeflyer.com
58.185.41.198	PTR	webmail.singaporeflyer.com
58.185.42.2	A	mail.asaholiday.com
58.185.42.67	A	pridns.asa.com.sg
58.185.43.196	A	www.omps.com.sg
58.185.43.229	A	ns1.eq-insurance.com.sg
58.185.43.232	A	www.eq-insurance.com.sg