Robtex

Up: 210.99.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 210.99.128.0/19
Down right: 210.99.160.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.99.128.25	PTR	mail.kangnam.ac.kr
210.99.138.129	PTR	pupylib.or.kr
210.99.154.9	A	www.gogung.go.kr
210.99.154.9	A	gogung.go.kr
210.99.154.21	A	www.royalpalace.go.kr
210.99.154.21	A	royalpalace.go.kr
210.99.157.8	PTR	cb.kicet.re.kr
210.99.160.22	A	jaehak0123.com
210.99.160.22	A	mail.jaehak0123.com
210.99.162.136	A	airpod.co.kr
210.99.163.7	A	withsystem.tk
210.99.169.131	A	ns.ncsc.go.kr
210.99.169.134	A	spam.ncsc.go.kr
210.99.169.152	A	mail5.ncsc.go.kr
210.99.169.153	A	mail.ncsc.go.kr
210.99.169.249	A	is.ncsc.go.kr
210.99.170.100	PTR	mr.go.kr
210.99.170.200	PTR	jongro.seoul.kr
210.99.170.212	A	cybervil.org
210.99.170.234	A	jongno.seoul.go.kr
210.99.170.234	A	jongno.go.kr
210.99.170.234	A	www.jongno.go.kr
210.99.172.162	A	mail.easycerti.net
210.99.172.162	A	mail.cyber.go.kr
210.99.172.162	A	mail.netan.go.kr
210.99.173.1	PTR	hanyang.hs.kr
210.99.173.1	PTR	hanyang.seoul.kr
210.99.177.15	A	ns.kocea.or.kr
210.99.177.15	A	ns.ceiis.or.kr
210.99.177.16	A	www.kocea.or.kr
210.99.177.16	A	www.kocea.kr
210.99.177.32	A	www.kocea.or.kr
210.99.182.10	A	www.ktmf.or.kr
210.99.182.10	A	www.ktcu.or.kr
210.99.182.10	A	ktmf.or.kr
210.99.182.11	PTR	mail.ktcu.or.kr
210.99.183.5	A	mail.seoulmc.or.kr
210.99.184.118	A	mail.daerimtech.com
210.99.187.11	A	ns.dongjak.go.kr
210.99.187.18	A	xn--2e0bw5j3nsqgaz89d.com
210.99.187.39	A	ns2.dongjak.go.kr
210.99.187.124	A	www.dongjak.go.kr
210.99.187.124	A	dongjak.go.kr