Robtex

Up: 210.124.12.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 210.124.13.0/25
Down right: 210.124.13.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.124.13.14	A+PTR	welfare.yescard.co.kr
210.124.13.40	PTR	kebcard.com
210.124.13.40	PTR	kebcredit.com
210.124.13.40	PTR	yescard.com
210.124.13.65	PTR	yesldap.kebcard.com
210.124.13.65	PTR	yesldap.kebcredit.com
210.124.13.65	PTR	yesldap.kebcs.com
210.124.13.72	PTR	yescard.co.kr
210.124.13.72	PTR	rsmtp.yescard.co.kr
210.124.13.81	A	kebcs.com
210.124.13.81	A	yespointclub.co.kr
210.124.13.81	A	yespoint.co.kr
210.124.13.87	PTR	ewebsvr.yescard.com
210.124.13.87	PTR	ewebsvr.yescard.co.kr
210.124.13.87	PTR	rsmtp.yescard.co.kr
210.124.13.88	A+PTR	mailsvr.yescard.co.kr
210.124.13.89	PTR	yescard.co.kr
210.124.13.89	PTR	rsmtp.yescard.co.kr
210.124.13.97	A+PTR	yesmail2.kebcard.co.kr
210.124.13.171	PTR	yescard.co.kr
210.124.13.171	PTR	rsmtp.yescard.co.kr