AS23581 Hynix Semiconductor Inc.

HYNIX-AS-KR-KR - Hynix Semiconductor Inc. · registered in South Korea

IPv4 addresses4,09610 prefixes · <0.001% of announced IPv4

Rank in South Korea#321largest network in KR by IPv4 space, of 853 · <0.01% of KR

Rank worldwide#15,817of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountrySouth Korea869 ASNs registered there

Open AS23581 in ASN lookup Look up an IP in this network (166.125.0.1) All networks in South Korea

IPv4 prefixes

All 10 prefixes, in address order.

166.125.0.0/24
166.125.230.0/24
166.125.239.0/24
166.125.240.0/22
166.125.244.0/23
166.125.246.0/24
166.125.248.0/24
166.125.250.0/23
166.125.252.0/23
166.125.254.0/24

Similar-sized networks in South Korea

ASNNameIPv4 addresses

AS17609#318 SILLAUNIVERSITY-AS-KR-KR - Silla Univ4,096

AS17845#319 GTP-AS-KR-KR - Gyeonggi Technopark4,096

AS17846#320 SKB-H-AS-KR-KR - SK Broadband Co Ltd4,096

AS23975#322 YC-AS-KR-KR - Yonam Institute of Technology4,096

AS131093#323 VIVATOSS-AS-KR-KR - viva republica4,096

AS2385#324 KRIBB-AS-KR-KR - KRIBB(Korea Research Institute of Bioscience Biotechnology)3,840

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