Robtex

Up: 125.5.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 125.5.192.0/22
Down right: 125.5.196.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
125.5.192.18	PTR	mail1.astech-pengson.com
125.5.192.18	PTR	mx.qnxsolutions.com
125.5.192.18	PTR	mail.yuasa.ph
125.5.192.19	PTR	mailhost1.vitro.epldt.net
125.5.192.25	PTR	mailhost5.vitro.epldt.net
125.5.192.26	A+PTR	mailhost52.vitro.epldt.net
125.5.192.27	A+PTR	mailhost53.vitro.epldt.net
125.5.192.82	A+PTR	mailhost6.vitro.epldt.net
125.5.192.91	A+PTR	mailhost91.vitro.epldt.net
125.5.192.98	A	mx1.ximktg.com
125.5.192.98	A	mx1.toyotabo.com.ph
125.5.192.98	A	mail.itscorporation.net
125.5.192.165	A	glenn.info.com.ph
125.5.192.172	A	pldtcheckout.com.ph
125.5.192.195	PTR	epldt195.epldt.net
125.5.192.195	A	pop.pldtdsl.net
125.5.192.195	A	smtp.pldtdsl.net
125.5.193.68	A	pacspbm3.pchc.com.ph
125.5.193.74	A	ecsweb1.pchc.com.ph