Robtex

Up: 121.88.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 121.88.5.0/25
Down right: 121.88.5.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.88.5.10	A	root.diskstory.com
121.88.5.10	A	ns.diskstory.com
121.88.5.10	A	ns2.diskstory.com
121.88.5.15	A	wisenwide.com
121.88.5.15	A	ns.wisenwide.com
121.88.5.18	A	ns.wisenwide.com
121.88.5.74	A	forbiznet.kr
121.88.5.74	A	ns1.forbiznet.kr
121.88.5.74	A	www.forbiznet.kr
121.88.5.82	A	hanpangame.com
121.88.5.83	A	www.day7.co.kr
121.88.5.92	A	adspace.co.kr
121.88.5.92	A	wall1paper.com
121.88.5.94	A	*.kbsmall.net
121.88.5.94	A	mail.kbsmall.net
121.88.5.94	A	kbsmall.net
121.88.5.98	A	yadong19.com
121.88.5.98	A	love79.tv
121.88.5.98	A	call79.com
121.88.5.99	A	dns.apinc.kr
121.88.5.99	A	ns2.apinc.kr
121.88.5.115	A+PTR	mail.dmgec.com
121.88.5.115	A+PTR	mail.dmgec.co.kr
121.88.5.115	A	webmail.dmgec.co.kr
121.88.5.116	A	spamout.dmgec.com
121.88.5.116	A	spamout.dmgec.co.kr
121.88.5.121	A	www.myjungwoo.com
121.88.5.121	A	30.00ok.kr
121.88.5.121	A	www.happych.co.kr
121.88.5.124	A	rugmarket.co.kr
121.88.5.124	A	mclean.co.kr
121.88.5.132	PTR	g2i.tidc.co.kr
121.88.5.132	A	www.cs4smb.or.kr
121.88.5.132	A	www.g-story.or.kr
121.88.5.134	A	yongsaem.com
121.88.5.134	A	xn--zf0bu12be7btxj.com
121.88.5.134	A	gogohan.kr
121.88.5.135	A	www.m-alba.com
121.88.5.135	A	mail.woonyoung.com
121.88.5.135	A	m-nara.co.kr
121.88.5.136	A	mail.jejupic.com
121.88.5.136	A	skindata.co.kr
121.88.5.136	A	ns2.mytive.co.kr
121.88.5.138	A	www.gmcenter.or.kr
121.88.5.138	A	care-tech.co.kr
121.88.5.138	A	anypowerenc.com
121.88.5.139	A	m-nara.co.kr
121.88.5.139	A	www.shinhanrentcar.com
121.88.5.139	A	*.woodbank.net
121.88.5.140	A	mylanguage.co.kr
121.88.5.140	A	mail.imgoya.com
121.88.5.140	A	www.imgoya.com
121.88.5.142	A	www.jajak.co.kr
121.88.5.142	A	floors.co.kr
121.88.5.142	A	jajak.co.kr
121.88.5.143	A	root.kolonet.net
121.88.5.143	A	www.kolonet.net
121.88.5.143	A	kolonet.net
121.88.5.144	A	04recipe.com
121.88.5.144	A	www.getin.kr
121.88.5.144	A	mail.04recipe.com
121.88.5.145	A	www.dmcleanmall.co.kr
121.88.5.145	A	www.smartcon.kr
121.88.5.145	A	www.archiweb.kr
121.88.5.146	A	mail.architimes.kr
121.88.5.146	A	mail.dlarchi.com
121.88.5.146	A	mail.sonsuself.com
121.88.5.148	A	shrink1st.org
121.88.5.148	A	*.lcomms.com
121.88.5.148	A	fonsign.com
121.88.5.150	A	ns.mizy.net
121.88.5.152	A	mail.insurancesupport.or.kr
121.88.5.152	A	insurancesupport.or.kr
121.88.5.155	A	oscompany.co.kr
121.88.5.155	A	www.kiwoombank.com
121.88.5.155	A	www.oscompany.co.kr
121.88.5.164	A	ns.howtoteps.com
121.88.5.164	A	ns.nexusteps.com
121.88.5.164	A	ns.nexuson.com
121.88.5.171	A	fafreeka.com
121.88.5.171	A	mail.red3838.com
121.88.5.171	A	red3838.com
121.88.5.173	A	ektc.kr
121.88.5.173	A	www.ektc.kr
121.88.5.175	A	go-pole.co.kr
121.88.5.175	A	phmeter.co.kr
121.88.5.175	A	mail.thelaungs.com
121.88.5.176	A	idaeshin.biz
121.88.5.176	A	mail.eilshin.biz
121.88.5.176	A	ns.idaeshin.biz
121.88.5.181	A	*.jam-dns.com
121.88.5.181	A	howtoteps.com
121.88.5.181	A	*.nexusgo.net
121.88.5.184	A	xn--oy2b1l49r08of1c.com
121.88.5.184	A	mail.adiscountcard.com
121.88.5.184	A	wordpresso.co.kr
121.88.5.188	A	smartautoscan.com
121.88.5.238	A	mycashbag.com
121.88.5.240	A+PTR	mail.naunbiz.co.kr
121.88.5.240	A	www.naunbiz.co.kr
121.88.5.240	A	naunbiz.co.kr
121.88.5.241	A	call888.net
121.88.5.247	A	myfirstaac.com