Robtex

Up: 203.123.48.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.123.48.0/25
Down right: 203.123.48.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.123.48.1	A+PTR	robusta.dcs1.biz
203.123.48.3	PTR	ns1.mnemonix.com.sg
203.123.48.3	A	ns1.dcs1.biz
203.123.48.3	A	ns1-dcs1.logicode.com.sg
203.123.48.4	PTR	ns2.mnemonix.com.sg
203.123.48.4	A	engns2.mnemonix.com.sg
203.123.48.4	A	ns2.dcs1.biz
203.123.48.6	A+PTR	router6.dcs1.biz
203.123.48.18	PTR	serv18.dcs1.biz
203.123.48.19	PTR	serv19.dcs1.biz
203.123.48.23	PTR	serv23.dcs1.biz
203.123.48.65	PTR	serv65.dcs1.biz
203.123.48.102	PTR	serv102.dcs1.biz
203.123.48.114	PTR	serv114.dcs1.biz
203.123.48.122	PTR	serv122.dcs1.biz
203.123.48.129	PTR	serv129.dcs1.biz
203.123.48.131	PTR	gnotes03.dcs1.biz
203.123.48.131	A	mapsdesign.com
203.123.48.133	PTR	serv133.dcs1.biz
203.123.48.133	A	mapsdesign.com
203.123.48.133	A	ftp.mapsdesign.com
203.123.48.134	PTR	serv134.dcs1.biz
203.123.48.134	A	mail2.mnemonix.com.sg
203.123.48.139	PTR	mailgate.mnemonix.com.sg
203.123.48.140	A+PTR	mailgate.mnemonix.com.sg
203.123.48.141	A+PTR	cpanel.dcs1.biz
203.123.48.142	A+PTR	cpanel01.dcs1.biz
203.123.48.142	A	raaga-samudra.com
203.123.48.142	A	www.raaga-samudra.com
203.123.48.145	PTR	cpanel04.dcs1.biz
203.123.48.145	A	apec-isti.org
203.123.48.145	A	www.asia-oss.net
203.123.48.146	PTR	cpanel05.dcs1.biz
203.123.48.146	A	isoc.sg
203.123.48.146	A	mymibb.org
203.123.48.147	PTR	cpanel06.dcs1.biz
203.123.48.147	A	bellavista.co.in
203.123.48.148	PTR	cpanel07.dcs1.com
203.123.48.148	A	3sixtyresearch.com
203.123.48.149	PTR	serv149.dcs1.biz
203.123.48.149	A	iriscomputers.net
203.123.48.149	A	changemytyre.com
203.123.48.150	PTR	serv150.dcs1.biz
203.123.48.150	A	progreso.training
203.123.48.151	PTR	serv151.dcs1.biz
203.123.48.151	A	logicode.co.id
203.123.48.151	A	logicode.com.my
203.123.48.154	PTR	serv154.dcs1.biz
203.123.48.158	PTR	serv158.dcs1.biz
203.123.48.158	A	imail.im
203.123.48.158	A	mail.imail.im
203.123.48.159	PTR	serv159.dcs1.biz
203.123.48.159	A	lc-mail02.logicode.com.sg
203.123.48.159	A	mail.logicode.co.th
203.123.48.162	A	mail.barkodemart.net
203.123.48.162	A	mail.barcodemart.org
203.123.48.162	A	mail.inkoyo.sg
203.123.48.164	PTR	aphrodite.broadside.broadsidelive.merceworld.com
203.123.48.164	A	barcodemart.org
203.123.48.164	A	barkodemart.net
203.123.48.181	PTR	serv181.dcs1.biz
203.123.48.193	A	pacific.merceworld.com
203.123.48.193	A	mx1.pub.merceworld.com
203.123.48.193	A	merce.in
203.123.48.196	PTR	allsales.dcs1.biz
203.123.48.196	A	changemytyre.com
203.123.48.196	A	sisinflexionpoint.com
203.123.48.202	PTR	serv202.dcs1.biz
203.123.48.208	PTR	serv208.dcs1.biz
203.123.48.211	PTR	isvr.mapsdesign.com
203.123.48.218	A+PTR	netmon2.dcs1.biz
203.123.48.218	A	3.asia.pool.ntp.org
203.123.48.218	A	3.lenbrook.pool.ntp.org
203.123.48.219	PTR	ntpmon.dcs1.biz
203.123.48.219	A	3.lede.pool.ntp.org
203.123.48.219	A	1.opnsense.pool.ntp.org
203.123.48.221	PTR	twmail01.tw-asia.com
203.123.48.227	A	myipv6forum.com
203.123.48.233	PTR	serv233.dcs1.biz
203.123.48.235	PTR	serv235.dcs1.biz
203.123.48.235	A	dubai.cpg.global
203.123.48.240	PTR	stlim.dcs1.biz
203.123.48.240	A	dcs1.biz
203.123.48.240	A	www.dcs1.biz
203.123.48.241	PTR	nntp.dcs1.biz
203.123.48.241	A	corp.thegates.biz
203.123.48.243	PTR	serv243.dcs1.biz
203.123.48.250	PTR	serv250.dcs1.biz
203.123.48.252	PTR	serv252.dcs1.biz
203.123.48.253	PTR	serv253.dcs1.biz