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AS131100
AS131100 Korea Internet Security Agency
FDNSKR-AS-KR-KR - Korea Internet Security Agency · registered in South Korea
IPv4 addresses 768 2 prefixes · <0.001% of announced IPv4
Rank in South Korea #532 largest network in KR by IPv4 space, of 853 · <0.01% of KR
Rank worldwide #43,338 of 79,396 networks with IPv4
IPv6 2 x /48 2 prefixes
IPv4 prefixes
All 2 prefixes, in address order.
1.18.119.0/24 210.101.62.0/23
IPv6 prefixes
All 2 prefixes.
2001:dcc:6::/48 2001:dcc:600::/48
Other ASNs named Korea Internet Security Agency
9 other networks use the same organisation name; together with AS131100 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 AS23596 EDNSKR-KR-KR - Korea Internet Security Agency KR 1,280 AS23599 DDNSKR-KR-KR - Korea Internet Security Agency KR 1,024 AS9642 KISA-KR - Korea Internet Security Agency KR 1,024 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
AS154270 #529 VOLVO-GROUP-IT-APNIC-AS-AP - VOLVO GROUP KOREA CO LTD, Construction Equipment Seoul1,024 AS131812 #530 HUMAXNETWORKS-AS-KR-KR - Humax Networks, INC.768 AS210576 #531 AS-YAGUMYAGUM Sangmin Lee trading as YAGUMYAGUM768 AS2563 #533 SCU-AS-KR-KR - Seoul Christain University768 AS9491 #534 NICEHOLDINGS-AS-KR-KR - NICE768 AS9527 #535 VP01-AS-KR-KR - VP768
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