Robtex

Up: 121.53.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 121.53.0.0/18
Down right: 121.53.64.0/18

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
121.53.105.234	A	award.blog.daum.net