Robtex

Up: 103.28.208.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 103.28.208.0/22
Down right: 103.28.212.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.28.208.3	PTR	zonetel-bb-208-3.zonetel.com.sg
103.28.208.138	PTR	zonetel-bb-208-138.zonetel.com.sg
103.28.208.162	PTR	zonetel-bb-208-162.zonetel.com.sg
103.28.208.178	PTR	zonetel-bb-208-178.zonetel.com.sg
103.28.208.186	PTR	zonetel-bb-208-186.zonetel.com.sg
103.28.209.5	A	backup.zonetel.com.sg
103.28.209.7	A	pridns.zonetel.com.sg
103.28.209.9	A+PTR	secdns.zonetel.com.sg
103.28.209.10	PTR	test.zonetel.com.sg
103.28.209.10	PTR	zimbra.zonetel.com.sg
103.28.209.16	PTR	zonetel-bb-209-16.zonetel.com.sg
103.28.209.24	A+PTR	srelay.zonetel.com.sg
103.28.209.41	PTR	zonetel-bb-209-41.zonetel.com.sg
103.28.209.43	PTR	zonetel-bb-209-43.zonetel.com.sg
103.28.209.57	PTR	zonetel-bb-209-57.zonetel.com.sg
103.28.209.64	PTR	zonetel-bb-209-64.zonetel.com.sg
103.28.209.83	PTR	cloudmail.zonetel.com.sg
103.28.209.83	A	mail.djghs.com
103.28.209.83	A	tls.cloudmail.cybersite.com.sg
103.28.209.100	PTR	zonetel-bb-209-100.zonetel.com.sg
103.28.209.101	PTR	zonetel-bb-209-101.zonetel.com.sg
103.28.209.112	PTR	zonetel-bb-209-112.zonetel.com.sg
103.28.209.113	PTR	zonetel-bb-209-113.zonetel.com.sg
103.28.209.120	PTR	zonetel-bb-209-120.zonetel.com.sg
103.28.209.121	PTR	zonetel-bb-209-121.zonetel.com.sg
103.28.209.129	PTR	zonetel-bb-209-129.zonetel.com.sg
103.28.209.143	PTR	zonetel-bb-209-143.zonetel.com.sg
103.28.209.166	PTR	zonetel-bb-209-166.zonetel.com.sg
103.28.209.167	A	dns2.nafa.edu.sg
103.28.209.167	A	dns2.nafa-intl.com
103.28.209.168	A+PTR	smtp03.nafa.edu.sg
103.28.209.169	A+PTR	smtp04.nafa.edu.sg
103.28.209.173	A	www.nafa.edu.sg
103.28.209.176	PTR	zonetel-bb-209-176.zonetel.com.sg
103.28.209.177	PTR	zonetel-bb-209-177.zonetel.com.sg
103.28.209.190	A	vdns2.nafa.edu.sg
103.28.209.192	PTR	zonetel-bb-209-192.zonetel.com.sg
103.28.209.221	PTR	zonetel-bb-209-221.zonetel.com.sg
103.28.209.226	A+PTR	mxshield.jusssolutions.com
103.28.209.228	PTR	zonetel-bb-209-228.zonetel.com.sg
103.28.209.228	A	ns2.jusssolutions.com
103.28.209.228	A	ns5.jusssolutions.com
103.28.209.229	PTR	zonetel-bb-209-229.zonetel.com.sg
103.28.209.250	PTR	zonetel-bb-209-250.zonetel.com.sg
103.28.209.250	A	mail.straitslaw.com.sg
103.28.209.251	PTR	zonetel-bb-209-251.zonetel.com.sg
103.28.209.251	A	ns2.straitslaw.com.sg
103.28.210.1	PTR	zonetel-bb-210-1.zonetel.com.sg
103.28.210.1	A	mail.chancellororchard.com.sg
103.28.210.1	A	mail.grandcentral.com.sg
103.28.210.10	PTR	mail.ghihotels.com
103.28.210.10	A+PTR	mail.brillantez.com
103.28.210.10	PTR	mail.hotelsolusi.com
103.28.210.11	PTR	zonetel-bb-210-11.zonetel.com.sg
103.28.210.51	PTR	zonetel-bb-210-51.zonetel.com.sg
103.28.210.51	A	www.telistar.com
103.28.210.51	A	www.telistarsolutions.com
103.28.210.52	PTR	zonetel-bb-210-52.zonetel.com.sg
103.28.210.58	PTR	zonetel-bb-210-58.zonetel.com.sg
103.28.210.58	A	mail.itfsolusi.com
103.28.210.59	PTR	zonetel-bb-210-59.zonetel.com.sg
103.28.210.59	A	staging.tshldg.com
103.28.210.67	A	mail.lpc.com.sg
103.28.210.67	A	firesystem.com.sg
103.28.210.78	PTR	zonetel-bb-210-78.zonetel.com.sg
103.28.210.82	A	glo-project.com
103.28.210.82	A	goodleadersonline.com
103.28.210.83	A+PTR	m5tech.aemix.com
103.28.210.83	A	mail.aemix.com
103.28.210.84	PTR	zonetel-bb-210-84.zonetel.com.sg
103.28.210.106	A	mail.lhfengine.net
103.28.210.107	A+PTR	mail.bdsengine.net
103.28.210.107	A+PTR	mail.lhfengine.net
103.28.210.107	A+PTR	mail.avantek.com.sg
103.28.210.117	A+PTR	mail.andpl.com
103.28.210.117	A+PTR	mail.andromedaandco.com
103.28.210.117	PTR	mail.anzaracruise.com.210.28.103.in-addr.arpa
103.28.210.137	A	mail.silvermetis.com
103.28.210.166	PTR	mail.threeg.com.sg
103.28.210.166	A	mail.gpe.com.sg
103.28.210.166	A	mail.3gholding.com
103.28.210.185	A+PTR	mymail.nsrcc.com.sg
103.28.210.220	PTR	zonetel-bb-210-220.zonetel.com.sg
103.28.210.222	PTR	zonetel-bb-210-222.zonetel.com.sg
103.28.210.222	A	mail.darul-arqam.org.sg
103.28.210.226	A	www.science.edu.sg
103.28.210.226	A	sci-ctr.edu.sg
103.28.210.226	A	ispied.sg
103.28.211.94	A	mail.g-direction.com
103.28.211.94	A	mail.alfacorpn.com
103.28.211.158	PTR	zonetel-bb-211-158.zonetel.com.sg
103.28.213.5	A	yaohua.com
103.28.213.11	A	shuizhouge.com
103.28.213.16	A	wbang.com
103.28.213.16	A	www.taichang.com
103.28.213.16	A	wzsdr.com
103.28.213.26	A	sit-telfort.com
103.28.213.26	A	telfortedu.com
103.28.213.28	A	todayex.net
103.28.213.28	A	quzhi.com.cn
103.28.213.51	A	dpnet.com.cn
103.28.213.139	A	www.softanywhere.com
103.28.213.141	A	wangyuwang.com
103.28.213.141	A	7x24.cn
103.28.213.142	A	ibizsyscloud.net
103.28.214.80	A	sdc-qczj.pingan.com
103.28.214.95	A	zhoutaotao.com
103.28.215.93	A	appmonlife.pingan.com.cn
103.28.215.137	A	appmonjs.pingan.com.cn
103.28.215.222	A	pa18-adweb.pingan.com