AS1781 Korea Advanced Institute of Science and Technology

KAIST-DAEJEON-AS-KR-KR - Korea Advanced Institute of Science and Technology · registered in South Korea

IPv4 addresses90,1124 prefixes · 0.003% of announced IPv4

Rank in South Korea#61largest network in KR by IPv4 space, of 853 · 0.08% of KR

Rank worldwide#2,009of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountrySouth Korea869 ASNs registered there

Open AS1781 in ASN lookup Look up an IP in this network (137.68.0.1) All networks in South Korea

IPv4 prefixes

All 4 prefixes, in address order.

137.68.0.0/18
143.248.0.0/16
192.249.16.0/20
210.107.128.0/20

Other ASNs named Korea Advanced Institute of Science and Technology

2 other networks use the same organisation name; together with AS1781 they announce 156,160 IPv4 addresses.

ASNNameIPv4 addresses

AS1704KAIST-SEOUL-AS-KR-KR - Korea Advanced Institute of Science and Technology KR49,664

AS7622ASN-KAIST-SAL-KR - Korea Advanced Institute of Science and Technology KR16,384

Similar-sized networks in South Korea

ASNNameIPv4 addresses

AS9319#58 HCNCHUNGJU-AS-KR-KR - HCN CHUNGBUK CABLE TV SYSTEMS93,952

AS9976#59 ICNDP-AS-KR-KR - Namincheon Brodcasting Co., Ltd.92,160

AS17577#60 GIGAPASS-AS-KR-KR - LG HelloVision Corp.92,160

AS38690#62 HYOSUNGITX-AS-KR-KR - HyosungITX87,552

AS23584#63 HYROADPUSAN-AS-KR-KR - PUSAN CABLE TV SYSTEM CO., LTD.87,040

AS38669#64 CNBTV-AS-KR-KR - LG HelloVision Corp.84,736

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