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AS23596
AS23596 Korea Internet Security Agency
EDNSKR-KR-KR - Korea Internet Security Agency · registered in South Korea
IPv4 addresses 1,280 4 prefixes · <0.001% of announced IPv4
Rank in South Korea #436 largest network in KR by IPv4 space, of 853 · <0.01% of KR
Rank worldwide #28,117 of 79,396 networks with IPv4
IPv6 4 x /48 3 prefixes
IPv4 prefixes
All 4 prefixes, in address order.
1.18.127.0/24 1.18.128.0/23 1.18.130.0/24 202.30.124.0/24
IPv6 prefixes
All 3 prefixes.
2001:dcc:5::/48 2001:dcc:500::/47 2001:dcc:502::/48
Other ASNs named Korea Internet Security Agency
9 other networks use the same organisation name; together with AS23596 they announce 15,616 IPv4 addresses.
ASN Name IPv4 addresses
AS9858 KRNICNET-KR - Korea Internet Security Agency KR 5,120 AS23600 GDNSKR-KR-KR - Korea Internet Security Agency KR 3,072 AS9640 KRCERT-AS-KR-KR - Korea Internet Security Agency KR 2,048 AS23599 DDNSKR-KR-KR - Korea Internet Security Agency KR 1,024 AS9642 KISA-KR - Korea Internet Security Agency KR 1,024 AS131100 FDNSKR-AS-KR-KR - Korea Internet Security Agency KR 768 AS131098 BDNSKR-AS-KR-KR - Korea Internet Security Agency KR 512 AS131099 CDNSKR-AS-KR-KR - Korea Internet Security Agency KR 512 AS9755 RPKINET1-KR - Korea Internet Security Agency KR 256
Similar-sized networks in South Korea
ASN Name IPv4 addresses
AS131856 #433 YONSEIWONJU-AS-KR-KR - WONJU SEVERANCE CHRISTIAN HOSPITAL1,536 AS131882 #435 CNUH-AS-KR-KR - Chungnam National University Hospital1,536 AS9492 #437 MAEKYUNG-AS-KR - Maeil Business Newspaper1,280 AS9521 #438 KATECH-AS-KR-KR - Korea Automotive Technology Institute1,280 AS9692 #439 HWS-AS-KR - Hanwha Investment Securities Co., Ltd.1,280
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