Robtex

Up: 121.252.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 121.253.0.0/17
Down right: 121.253.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.253.7.35	A	st.samsung.com
121.253.7.131	PTR	130.samsung.co.kr
121.253.9.41	A+PTR	mailx.sericeo.com
121.253.9.42	A	seripromini.org
121.253.9.50	A	www.seripro.org
121.253.9.50	A	www.mkiss.or.kr
121.253.31.15	A	connectplus.samsunglife.com
121.253.31.31	A	samsungga.com
121.253.31.51	A	connectplusdcc.samsunglife.com
121.253.31.60	A	u-channel-ga.samsunglife.com
121.253.46.100	A	www.redstone.co.kr
121.253.46.120	PTR	mail.logickorea.co.kr
121.253.50.11	PTR	www.mando.com
121.253.53.10	A	echinaro.com
121.253.56.138	A	vpn.samsungfire.com
121.253.57.50	A+PTR	mail.mobiledesk.co.kr
121.253.57.60	A+PTR	mail.mobiledesk.kr
121.253.57.60	A	mobiledesk.kr
121.253.58.25	A	www.homeplusstory.com
121.253.58.25	A	homeplusstory.com
121.253.58.25	A	homeplusstory.co.kr
121.253.58.51	A	xn--2n1b18f32df1i9odhzsrhlhmc.com
121.253.69.121	A	*.docubill.co.kr
121.253.69.121	A	www.docubill.co.kr
121.253.73.153	A	ns.cosmoamt.com
121.253.73.155	A+PTR	mailgw.cosmoamt.com
121.253.73.166	A	email.cosmoamt.com
121.253.74.103	A	obcpeople.com
121.253.74.200	A	kwam.co.kr
121.253.74.200	A	obfsms.com
121.253.74.213	A	mail.ob.co.kr
121.253.80.21	A	ciiaudits.co.kr
121.253.80.21	A	ciiaudits.com
121.253.80.24	A	cii.samsung.co.kr
121.253.80.24	A	cii.samsung.com
121.253.81.11	A	xn--070-vk9ne2ch9e.biz
121.253.81.11	A	xn--070-iy4njs.net
121.253.81.11	A	samsung070.net
121.253.82.12	A	akplaza.co.kr
121.253.82.12	A	akplaza.com
121.253.82.12	A	www.aktown.co.kr
121.253.89.120	A	t2exdns2.t2group.co.kr
121.253.200.68	A	gavpn.samsunglife.com
121.253.249.97	A	1xbet-zerkalo-rabochee.ru