Robtex

Up: 103.16.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 103.16.40.0/23
Down right: 103.16.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.16.41.2	A+PTR	mail.platinumvictory.com
103.16.41.3	A	mail.chanfong.com
103.16.41.3	A	mail.one2furniture.com
103.16.41.3	A	mail.biz2u.com.my
103.16.41.6	A	lmarine-services.com
103.16.41.6	A	cometrecycle.com
103.16.41.6	A	gogreenonline.net
103.16.41.8	A	dc-5cb85f42-m.doxapps.com
103.16.41.8	A	greenoss.my
103.16.41.9	A	one2furniture.com
103.16.41.9	A	lcfurniture.com
103.16.41.11	PTR	smtp.titijaya.com.my
103.16.41.14	A+PTR	mail.skytomato.com.my
103.16.41.14	A	mail.hwd.com.my
103.16.41.14	A	webmail.titijaya.com.my
103.16.41.41	A+PTR	smtp2.jagprop.com
103.16.41.41	A	www.51evernew.com.my
103.16.41.41	A	51evernew.com.my
103.16.42.0	A	isos.net.my
103.16.42.8	A	ns1.isos.com.my
103.16.42.8	A	narnia.mxdns1.com
103.16.42.9	A	smtp.mxcloud.my
103.16.42.12	A+PTR	mx1.mxcloud.my
103.16.42.12	A	mx.jaringmetal.com
103.16.42.18	A+PTR	smtp.dpstar.com.my
103.16.42.19	A+PTR	smtp.jaringmetal.com
103.16.42.19	A	www.jaringmetal.com
103.16.42.20	PTR	webmail.timatch.net
103.16.42.20	A	imap.timatch.net
103.16.42.23	A	mailx.sanglintackle.com
103.16.42.23	A	mail2.ufgfishing.com
103.16.42.26	A	sakadoauto.com
103.16.42.26	A	smtp.baseline.com.my
103.16.42.26	A	baseline.com.my
103.16.42.48	A+PTR	site1.mailhappen.com
103.16.42.48	A	ns2.mailhappen.com
103.16.42.48	A	esg1.mailhappen.com
103.16.42.51	A+PTR	esg.mailhappen.com
103.16.42.51	A	efa2.mdmis.com
103.16.42.54	A	dmcsolution.com.my
103.16.42.57	A	artisansofthegame.com
103.16.42.57	A	mirosace.com.my
103.16.42.57	A	worldfoods.com.my
103.16.42.111	A	efa3.mdmis.com
103.16.42.112	A	esg.mailhappen.com
103.16.42.116	A	jre.my
103.16.42.117	A+PTR	mail.prooffice.com.my
103.16.42.117	A	mail.estatementinfo.com.my