Robtex

Up: 203.116.152.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.116.153.0/25
Down right: 203.116.153.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.116.153.12	PTR	12.153.116.203.m1.com.sg
203.116.153.12	A	onelogin.m1.com.sg
203.116.153.19	PTR	19.153.116.203.m1.com.sg
203.116.153.19	A	mym1.m1.com.sg
203.116.153.22	PTR	22.153.116.203.m1.com.sg
203.116.153.22	A	phr.m1.com.sg
203.116.153.23	PTR	23.153.116.203.m1.com.sg
203.116.153.23	A	svclink.m1.com.sg
203.116.153.24	PTR	24.153.116.203.m1.com.sg
203.116.153.24	A	sunperks.m1.com.sg
203.116.153.29	A	pbbtopup.m1.com.sg
203.116.153.33	PTR	33.153.116.203.m1.com.sg
203.116.153.33	A	www.mobileone.com.sg
203.116.153.33	A	mobile1.com.sg
203.116.153.37	PTR	37.153.116.203.m1.com.sg
203.116.153.37	A	ns01.m1.com.sg
203.116.153.37	A	ns1.m1.com.sg
203.116.153.38	PTR	38.153.116.203.m1.com.sg
203.116.153.38	A	m1music.com.sg
203.116.153.38	A	topup.m1.com.sg
203.116.153.41	A	biztext.m1.com.sg
203.116.153.42	PTR	mail.m1.com.sg
203.116.153.44	PTR	44.153.116.203.m1.com.sg
203.116.153.44	A	connectingtones.m1.com.sg
203.116.153.44	A	csfeedback.m1.com.sg
203.116.153.47	A	maintenance.m1.com.sg
203.116.153.48	A+PTR	m1shop.com.sg
203.116.153.48	A	m1shop.sg
203.116.153.50	PTR	50.153.116.203.m1.com.sg
203.116.153.51	A	gmfc.miworld.com.sg
203.116.153.52	PTR	smtp.miworld.com.sg
203.116.153.52	A	edasplus.m1.com.sg
203.116.153.53	A+PTR	smtp1.m1.com.sg
203.116.153.55	PTR	55.153.116.203.m1.com.sg
203.116.153.55	A	ads.m1.com.sg
203.116.153.59	PTR	m1.com.sg
203.116.153.59	A	mobile1.sg
203.116.153.59	A	m1.sg
203.116.153.62	PTR	62.153.116.203.m1.com.sg
203.116.153.62	A	mmsr.m1.com.sg
203.116.153.204	A	m1shop.com.sg
203.116.153.204	A	mobileone.sg
203.116.153.204	A	nes2.m1.com.sg