http://whois.kisa.or.kr/kor/

http://www.whois.sc/

IP Address WHOIS

We support IP Address WHOIS lookups for all registries. In addition, we provide Reverse DNS, Geo-location, andReverse IP (websites using the same IP Address).

Comprehensive TLD Coverage

With support for all Generic TLDs (gTLDs) and most of the over 250 Country Code TLDs (ccTLDs), Whois.sc is the best source for Domain Ownership Information.

Reverse WHOIS

We offer the most comprehensive Registrant Search. Find every domain name ever owned by any specific company or individual with Reverse WHOIS.