Robtex

Up: 121.58.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 121.58.220.0/23
Down right: 121.58.222.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.58.220.0	PTR	0.220.58.121-rev.convergeict.com
121.58.220.10	A	dns1.centuryasia.com.ph
121.58.220.10	A	hotelwifi.asia
121.58.220.10	A	dns1.azuralaw.com
121.58.220.59	A	lifedata.com.ph
121.58.220.62	A	lifedata.ph
121.58.220.172	A	centuryasia.com.ph
121.58.221.55	A	dns1.innosen.com
121.58.221.55	A	dns1.innosen.asia
121.58.221.55	A	unpersonal.com
121.58.221.69	PTR	mail.u-learnenglish.com
121.58.221.69	A	mx1.skyproconcepts.com
121.58.221.69	A	mx1.u-learnenglish.com
121.58.221.158	A	cpgroup.com.ph
121.58.221.158	A	qctuneshop.com
121.58.221.158	A	mail.cpgroup.com.ph
121.58.221.172	PTR	172.221.58.121.-rev.convergeict.com
121.58.221.172	A	ebtheadoffice.kaubegroup.com
121.58.221.178	A	phymate.com
121.58.221.205	A	rsbgroup.net
121.58.221.222	A	iamgabaldon.com
121.58.222.98	A	ns.dcioutsourcing.com
121.58.222.98	A	s2.devinecareinc.com
121.58.222.98	A	ns.ilata.net
121.58.222.106	A+PTR	mail.rmc.doh.gov.ph
121.58.223.4	A	dns.salcedo.aps.ateneo.edu
121.58.223.195	A	vserver-01.zobel.dlsu.edu.ph
121.58.223.196	A	vserver-02.dlszobel.edu.ph
121.58.223.207	A	www.dlszobel.edu.ph
121.58.223.207	A	www.zobel.dlsu.edu.ph
121.58.223.255	PTR	255.223.58.121-rev.convergeict.com