Robtex

Up: 61.97.112.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 61.97.112.0/22
Down right: 61.97.116.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
61.97.112.18	A+PTR	oksung.com
61.97.112.18	A+PTR	xn--li5btxhh74fr2w.kr
61.97.112.18	PTR	ok-net.net
61.97.112.19	PTR	ns.oksung.com
61.97.112.19	PTR	ns.ok-net.net
61.97.112.19	PTR	ns.nocom.co.kr
61.97.112.20	PTR	pop1.oksung.com
61.97.112.20	PTR	qmail.oksung.com
61.97.112.20	PTR	mail1.syglove.com
61.97.112.28	A+PTR	ns1.oksung.com
61.97.112.28	A+PTR	ns1.ok-net.net
61.97.112.28	PTR	ns1.nocom.co.kr
61.97.113.51	A	smtit.co.kr
61.97.113.100	PTR	mail.hyosungmarketing.com
61.97.113.100	PTR	pop.oksung.com
61.97.113.100	PTR	mail.syglove.com
61.97.113.166	A+PTR	cdns1-1.ok-net.net
61.97.113.167	A+PTR	djbdns1-1.ok-net.net
61.97.113.168	A+PTR	cdns1-2.ok-net.net
61.97.113.169	A	djbdns1-2.ok-net.net
61.97.113.170	A	cdns1-3.ok-net.net
61.97.113.171	A	djbdns1-3.ok-net.net
61.97.113.177	A+PTR	smtp-1.ok-net.net
61.97.113.218	A	spamgateway.ok-net.net
61.97.113.244	A+PTR	cdns2-2.ok-net.net
61.97.113.244	A	meetdelaware.com
61.97.113.246	A+PTR	smtp-2.ok-net.net
61.97.118.5	A	kuvatech.com
61.97.118.6	A	webmail.one.co.kr
61.97.119.2	A	ns.wsfnt.co.kr