KRNIC is not an ISP but a National Internet Registry similar to APNIC.

AS Number          : AS9644
AS Name            : SKTELECOM-NET-AS

[ Organization Information ]
Name               : SK Telecom
Address            : T tower, Seoul Jung-gu Eulji-ro 65
Zip Code           : 04539

Name               : AS Manager
Phone              : +82-2-1599-0011
E-Mail             : sktsec@sk.com


- KISA/KRNIC WHOIS Service -