Robtex

Up: 61.106.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 61.106.60.0/23
Down right: 61.106.62.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
61.106.60.22	A	mail.51k.co.kr
61.106.62.15	A	mail.koreaairtech.com
61.106.62.31	PTR	beaconinc.co.kr
61.106.62.31	PTR	mail.beaconinc.co.kr
61.106.62.33	PTR	e-snh.co.kr
61.106.62.33	A+PTR	mail.e-snh.co.kr
61.106.62.35	PTR	ok-dang.com
61.106.62.35	PTR	mail.ok-dang.com
61.106.62.35	A	mail.taxall.net
61.106.62.37	A+PTR	e-snhv.com
61.106.62.37	PTR	mail.e-snhv.com
61.106.62.37	A	www.e-snhv.com
61.106.62.38	PTR	skbon.com
61.106.62.38	PTR	mail.skbon.com
61.106.62.42	A	mail.cnst.co.kr
61.106.62.44	A	herr.co.kr
61.106.62.44	A	www.herr.co.kr
61.106.62.45	A	mail.bioptro.co.kr
61.106.62.45	A	bioptro.co.kr
61.106.62.50	PTR	kem-tech.net
61.106.62.50	PTR	mail.kem-tech.net
61.106.62.53	PTR	neovia.co.kr
61.106.62.53	PTR	mail.neovia.co.kr
61.106.62.57	A	mail.eyesel.com
61.106.62.57	A	eyesel.com