Robtex

Up: 121.58.190.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 121.58.191.0/25
Down right: 121.58.191.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.58.191.7	PTR	ip-7.191.58.121.cergis.net.id
121.58.191.35	PTR	mx2.cergis.net.id
121.58.191.35	PTR	ns2.cergis.net.id
121.58.191.35	A	ns2.beacon.co.id
121.58.191.36	PTR	ip-36.191.58.121.cergis.net.id
121.58.191.37	PTR	ip-37.191.58.121.cergis.net.id
121.58.191.39	PTR	ip-39.191.58.121.cergis.net.id
121.58.191.40	PTR	rm.sitech.co.id
121.58.191.40	A	kringindonesia.com
121.58.191.40	A	goscontact.co.id
121.58.191.48	PTR	ip-48.191.58.121.cergis.net.id
121.58.191.48	A	mail.wandisk.net
121.58.191.54	PTR	ip-54.191.58.121.cergis.net.id
121.58.191.58	A+PTR	zimbra.cergis.net.id
121.58.191.58	A	mail.spl.co.id
121.58.191.58	A	mail.petrogas-group.com
121.58.191.59	A+PTR	smtp.cergis.net.id
121.58.191.59	A	ppbellezza.com
121.58.191.60	PTR	crm.cergis.net.id
121.58.191.67	PTR	ip-67.191.58.121.cergis.net.id
121.58.191.67	A	mail.mavens-group.com
121.58.191.69	PTR	ip-69.191.58.121.cergis.net.id
121.58.191.69	A	indonesia.style.com
121.58.191.74	PTR	ip-74.191.58.121.cergis.net.id
121.58.191.74	A	mail.indotech.my.id
121.58.191.74	A	mail.angkasaabma.com
121.58.191.106	A	mail.dukhawasih.com
121.58.191.114	PTR	ip-114.191.58.121.cergis.net.id
121.58.191.136	PTR	ip-136.191.58.121.cergis.net.id
121.58.191.157	PTR	ip-157.191.58.121.cergis.net.id
121.58.191.164	PTR	ip-164.191.58.121.cergis.net.id
121.58.191.164	A	www.ehef.id
121.58.191.164	A	alumnikanisius.org
121.58.191.167	A+PTR	ns2.cergis.net.id
121.58.191.172	A	cinemaku.net
121.58.191.172	A	facetrobot.com
121.58.191.172	A	iptvkor.com
121.58.191.184	PTR	ip-184.191.58.121.cergis.net.id
121.58.191.205	A	mail.rullysimo.com
121.58.191.210	PTR	ip-210.191.58.121.cergis.net.id
121.58.191.211	PTR	ip-211.191.58.121.cergis.net.id
121.58.191.211	A	mail.psswrd.co
121.58.191.211	A	mail.upnormalspingfans.com
121.58.191.212	PTR	ip-212.191.58.121.cergis.net.id
121.58.191.212	A	mail.dukhawasih.com
121.58.191.212	A	mail.design-tre.com
121.58.191.214	PTR	ip-214.191.58.121.cergis.net.id
121.58.191.221	PTR	ip-221.191.58.121.cergis.net.id
121.58.191.232	PTR	ip-232.191.58.121.cergis.net.id