Robtex

Up: 206.219.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 206.219.16.0/22
Down right: 206.219.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
206.219.22.2	A	skytex.co.kr
206.219.22.12	A	dongsasub.co.kr
206.219.22.16	PTR	xn--h50by74aba702jb6ag5t.kr
206.219.22.16	PTR	pos.xn--h50by74aba702jb6ag5t.kr
206.219.22.16	A+PTR	www.xn--h50by74aba702jb6ag5t.kr
206.219.22.30	PTR	skgmail.sknetworks.com
206.219.22.30	PTR	skgmail.xn--h50by74aba702jb6ag5t.kr
206.219.22.30	PTR	skgmail.sknetworks.co.kr
206.219.22.31	PTR	spam.sknetworks.com
206.219.22.31	PTR	spam.sknetworks.co.kr
206.219.22.33	A	mail.ufitmobi-cam.co.kr
206.219.22.33	A	mail.nissan-skn.com
206.219.22.33	A	mail.nissan-sk.co.kr
206.219.22.46	A	sknpass.co.kr
206.219.22.50	A+PTR	rtod.net
206.219.22.55	A	sk-cellular.com
206.219.22.55	A	skcellular.com
206.219.22.55	A	sklogis.com
206.219.22.60	A	skfootwear.com
206.219.22.62	A	asianhub21.com
206.219.22.62	A	skcommunity.co.kr
206.219.22.83	A	sktops.co.kr
206.219.22.83	A	sktops.net
206.219.22.83	A	sktops.com
206.219.22.92	A	skcomplaza.co.kr
206.219.22.102	A	sk-subscription.co.kr
206.219.22.102	A	011010shop.co.kr
206.219.22.102	A	bizmobile.co.kr
206.219.22.121	A	topsplus.co.kr
206.219.22.137	A	caspi.co.kr
206.219.22.137	A	www.caspi.co.kr
206.219.22.150	A	xiangtie.co.kr
206.219.22.161	A	eigenpost.com.cn