AS9637 Korea Basic Science Institute

KBSI-AS-KR-KR - Korea Basic Science Institute · registered in South Korea

IPv4 addresses4,8647 prefixes · <0.001% of announced IPv4

Rank in South Korea#297largest network in KR by IPv4 space, of 853 · <0.01% of KR

Rank worldwide#13,997of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountrySouth Korea869 ASNs registered there

Open AS9637 in ASN lookup Look up an IP in this network (203.230.121.1) All networks in South Korea

IPv4 prefixes

All 7 prefixes, in address order.

203.230.121.0/24
203.230.122.0/23
203.253.239.0/24
203.253.240.0/21
210.110.204.0/24
210.125.80.0/22
210.125.86.0/23

Similar-sized networks in South Korea

ASNNameIPv4 addresses

AS55624#294 DAELIM-AS-KR-KR - DAELIM5,120

AS55625#295 CWUNET-AS-KR-KR - Chungwoon University5,120

AS4664#296 HIT-KR-AP - Shinbiro5,119

AS10073#298 KNOU-AS-KR - Korea National Open University4,864

AS45399#299 KAL-AS-KR-KR - Hanjin Information Systems Telecommunication Co., Ltd4,864

AS55616#300 DGIST-AS-KR-KR - DGIST4,864

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources