Robtex

Up: 121.58.190.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 121.58.190.0/25
Down right: 121.58.190.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.58.190.10	PTR	ip-10.190.58.121.cergis.net.id
121.58.190.19	PTR	ip-19.190.58.121.cergis.net.id
121.58.190.19	A	lesswasteproject.com
121.58.190.19	A	sapugunung.org
121.58.190.35	A+PTR	ns3.cergis.net.id
121.58.190.35	A	ns1.beacon.co.id
121.58.190.35	A	ns1.polarismmi.net.id
121.58.190.36	PTR	ip-31.190.58.121.cergis.net.id
121.58.190.36	A	90cc.org
121.58.190.37	A+PTR	smtp2.cergis.net.id
121.58.190.37	A	smtp.cergis.net.id
121.58.190.39	PTR	ip-39.190.58.121.cergis.net.id
121.58.190.39	A	www.persaels.co.id
121.58.190.39	A	kringindonesia.com
121.58.190.40	PTR	ip-40.190.58.121.cergis.net.id
121.58.190.40	A	perdanatelekomindo.co.id
121.58.190.40	A	mail.perdanatelekomindo.co.id
121.58.190.43	PTR	ip-43.190.58.121.cergis.net.id
121.58.190.44	A	info.cergis.net.id
121.58.190.46	A	sitech.co.id
121.58.190.56	PTR	ip-56.190.58.121.cergis.net.id
121.58.190.60	A	sitech.co.id
121.58.190.66	A	mail.imutimut.com
121.58.190.66	A	ns1.imutimut.com
121.58.190.103	PTR	ip-103.190.58.121.cergis.net.id
121.58.190.103	A	interdesign.co.id
121.58.190.106	PTR	ip-106.190.58.121.cergis.net.id
121.58.190.106	A	mail.teracomprima.com
121.58.190.107	PTR	ns1.cergis.net.id
121.58.190.107	A	webmail.ptadaro.com
121.58.190.107	A	goscontact.co.id
121.58.190.127	PTR	ip-127.190.58.121.cergis.net.id
121.58.190.128	PTR	ip-128.190.58.121.cergis.net.id
121.58.190.131	PTR	ip-131.190.58.121.cergis.net.id
121.58.190.247	PTR	ip-247.190.58.121.cergis.net.id