Robtex

Up: 210.4.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 210.4.0.0/21
Down right: 210.4.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.4.2.4	PTR	ns01.bti.net.ph
210.4.2.6	PTR	smtp3.bti.net.ph
210.4.2.14	A	aaa2-dil.bti.net.ph
210.4.2.15	A	aaa2b.dil.bti.net.ph
210.4.2.49	PTR	smtp2-dil.bti.net.ph
210.4.2.50	A+PTR	vsf-mx1.bti.net.ph
210.4.3.2	A	mx3.emc.com.ph
210.4.3.2	A	mxbt.dot.ph
210.4.3.2	A	avmx1.domains.ph
210.4.3.52	PTR	pop.skybroadband.com.ph
210.4.3.52	A	dev-server.bti.net.ph
210.4.3.54	PTR	smtp.skybroadband.com.ph
210.4.3.233	PTR	ns.mahjong88.com
210.4.5.70	A	business.bdo.com.ph
210.4.5.88	A	www.mobile.bdo.com.ph
210.4.5.99	A	www.mobile02.bdo.com.ph
210.4.5.111	A	online.bdo.com.ph
210.4.5.117	A	www.bdo.com.ph
210.4.5.121	A	bdonomura.com.ph
210.4.5.243	A	www2.punongbayan-araullo.com
210.4.6.91	PTR	mail13.mabuhaymiles.com
210.4.6.95	A	www.pal.com.ph
210.4.6.95	A	www.jp.philippineair.com
210.4.6.95	A	jp.philippineair.com
210.4.8.2	A+PTR	flc-iascebu2.fastgroup.biz
210.4.8.2	A	smtp1.fastgroup.biz
210.4.8.3	A+PTR	flc-iascebu3.fastgroup.biz
210.4.8.3	A	smtp2.fastgroup.biz
210.4.8.7	PTR	flc-iascebu7.fastgroup.biz
210.4.8.50	A+PTR	host1.phceb.sykesasia.com
210.4.8.50	A	phceb.sykesasia.com
210.4.8.51	A+PTR	host2.phceb.sykesasia.com
210.4.8.52	A	host3.phceb.sykesasia.com
210.4.8.71	A	okbank.org
210.4.8.71	A	mail.okbank.org
210.4.8.71	A	www.okbank.org
210.4.8.75	A	www.okbank.org
210.4.8.227	A	plato.msugensan.edu.ph
210.4.8.229	A	sapsap.msugensan.edu.ph
210.4.8.229	A	sym.gdsz.afrikaansevrouwen983889.sexdating2.info
210.4.8.234	A	bigeye.msugensan.edu.ph
210.4.8.240	A	msugensan.edu.ph
210.4.8.242	A	mxchange.msugensan.edu.ph
210.4.11.116	A+PTR	mail.lhparagon.com
210.4.11.116	A	owa.lhparagon.com
210.4.11.116	A	smtp.lhparagon.com
210.4.11.118	A	ns2.lhparagon.com
210.4.11.133	A	dmpilogs.fastgroup.biz
210.4.12.218	A	legazpibank.com.ph
210.4.12.218	A	www.legazpibank.com.ph
210.4.14.83	A	www.newtrends.com.ph
210.4.14.83	A	mail.bhagis.com