Robtex

Up: 211.250.130.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 211.250.131.0/25
Down right: 211.250.131.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
211.250.131.137	A	mall.epost.kr
211.250.131.137	A	mall.epost.go.kr
211.250.131.137	A	node13.mall-epost-go-kr.nciashield.org
211.250.131.139	A	kstamp.go.kr
211.250.131.139	A	krstamp.com
211.250.131.139	A	stamp.epost.kr
211.250.131.140	A	ems.epost.go.kr
211.250.131.140	A	node13.ems-epost-go-kr.nciashield.org
211.250.131.140	A	ems-epost-go-kr.nciashield.org
211.250.131.141	A	post.go.kr
211.250.131.141	A	epost.go.kr
211.250.131.141	A	epost.kr
211.250.131.142	A	node13.m-epost-go-kr.nciashield.org
211.250.131.142	A	nmallpush.epost.go.kr
211.250.131.164	A	ns.epost.go.kr
211.250.131.164	A	krpost.net
211.250.131.165	A	ns1.epost.go.kr
211.250.131.166	PTR	mail.epost.kr
211.250.131.166	PTR	mail.krpost.net
211.250.131.166	PTR	mail.epost.go.kr
211.250.131.167	PTR	mail.epost.kr
211.250.131.167	PTR	mail.krpost.net
211.250.131.167	PTR	mail.epost.go.kr
211.250.131.168	PTR	mail.epost.go.kr
211.250.131.168	PTR	mail.krpost.net
211.250.131.168	PTR	mail.epost.kr
211.250.131.169	PTR	mail.epost.kr
211.250.131.169	PTR	mail.krpost.net
211.250.131.169	PTR	mail.epost.go.kr
211.250.131.171	PTR	mail.epost.kr
211.250.131.171	PTR	mail.krpost.net
211.250.131.171	PTR	mail.epost.go.kr
211.250.131.172	A+PTR	mx.epost.go.kr
211.250.131.172	PTR	posa.or.kr
211.250.131.172	A	mx.krpost.net
211.250.131.173	A+PTR	mail.epost.kr
211.250.131.173	A+PTR	mail.krpost.net
211.250.131.173	A+PTR	mail.epost.go.kr
211.250.131.174	A	image.epost.go.kr