Robtex

Up: 206.219.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 206.219.0.0/21
Down right: 206.219.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
206.219.0.3	PTR	sky.skglobal.com
206.219.0.3	PTR	sky.vixlam.co.kr
206.219.0.3	A	sky.okskzone.com
206.219.0.7	PTR	mail.walkerhillhotel.co.kr
206.219.0.7	PTR	mail.sheratonwalkerhill.co.kr
206.219.0.61	A+PTR	sky2.skglobal.com
206.219.0.61	A+PTR	sky2.sknetworks.com
206.219.0.61	A+PTR	sky2.sknetworks.co.kr
206.219.1.63	A+PTR	skgrepl.sknetworks.co.kr
206.219.1.63	A	skgrepl.skglobal.com