AS55609 Financial Security Institute

FSICERT-AS-KR-KR - Financial Security Institute · registered in South Korea

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in South Korea#798largest network in KR by IPv4 space, of 853 · <0.01% of KR

Rank worldwide#68,635of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountrySouth Korea869 ASNs registered there

Open AS55609 in ASN lookup Look up an IP in this network (203.190.4.1) All networks in South Korea

IPv4 prefixes

All 1 prefix, in address order.

203.190.4.0/24

Other ASNs named Financial Security Institute

1 other network uses the same organisation name; together with AS55609 they announce 768 IPv4 addresses.

ASNNameIPv4 addresses

AS45971FSIISAC-AS-KR-KR - Financial Security Institute KR512

Similar-sized networks in South Korea

ASNNameIPv4 addresses

AS55596#795 GILHOSP-AS-KR-KR - Gachon University Gil Hospital256

AS55601#796 ECFC-AS-KR-KR - Electric Contractors Financial Cooperative256

AS55605#797 DAEWONPHARM-AS-KR-KR - daewonpharm256

AS131096#799 MASTERCAR-AS-KR-KR - Master Motors Management256

AS131097#800 KEAD-AS-KR-KR - KEAD256

AS131101#801 BNKSYS-AS-KR-KR - BNK SYSTEM256

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