Robtex

Up: 121.52.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 121.53.0.0/17
Down right: 121.53.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
121.53.15.108	A	sv.dnip.net
121.53.62.76	A	ewonju.com
121.53.85.3	A	t1.int.daumcdn.net
121.53.85.3	A	t1-u95xu757.kgslb.com
121.53.104.76	A	track.tiara.daum.net
121.53.104.76	A	webid.ad.daum.net
121.53.104.102	A	durl.me
121.53.104.102	A	kko.to
121.53.105.26	A	fiyboot.kakao.com
121.53.105.173	A	p2-play.kgslb.com
121.53.105.193	A	daum.net
121.53.105.234	A	tistory.com
121.53.167.12	A	idevhs.com
121.53.201.97	A	kakaointelligence.com
121.53.201.97	A	kakaoenterprisesolution.com
121.53.201.97	A	kakaoenterprise.com
121.53.201.236	A	t1.int.daumcdn.net
121.53.202.193	A	t1.int.kakaocdn.net
121.53.202.196	A	hades-proxy.v.gl.kakao.com
121.53.202.197	A	navisdk-api.gl.kakao.com
121.53.202.200	A	accounts.g.daum.net
121.53.202.238	A	t1.int.daumcdn.net
121.53.203.68	A	calendar-api.gl.kakao.com
121.53.203.73	A	makers-gateway.kakao.com
121.53.203.82	A	page-billing-web.kakao.com
121.53.203.83	A	brandsearch.ad.g.daum.net
121.53.204.131	A	blogproxy.daum.net
121.53.204.134	A	taxi-gateway.kakao.com
121.53.204.138	A	magazine.daum.net
121.53.204.144	A	gateway.webtoon.daum.net
121.53.204.159	A	navisdk-api.gl.kakao.com
121.53.205.196	A	alex-ws.daum.net
121.53.205.205	A	blog.daum.net
121.53.205.216	A	solar-middle.search.daum.net
121.53.205.226	A	story-wwyq1rml.kgslb.com
121.53.205.240	A	t1.int.kakaocdn.net
121.53.208.7	A	web.payments.gl.kakao.com
121.53.216.7	A	member.melon.com
121.53.216.8	A	www.melon.co.kr
121.53.216.8	A	melon.com
121.53.216.9	A	tktapi.melon.com
121.53.218.13	A	webtoon-9b278dfc.kgslb.com
121.53.218.30	A	t1.int.daumcdn.net
121.53.218.31	A	t1.int.kakaocdn.net