AS38129 S1 CORPORATION

S1-AS-KR-KR - S1 CORPORATION · registered in South Korea

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in South Korea#507largest network in KR by IPv4 space, of 853 · <0.01% of KR

Rank worldwide#37,296of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountrySouth Korea869 ASNs registered there

Open AS38129 in ASN lookup Look up an IP in this network (103.19.124.1) All networks in South Korea

IPv4 prefixes

All 1 prefix, in address order.

103.19.124.0/22

Similar-sized networks in South Korea

ASNNameIPv4 addresses

AS38122#504 SGIC-AS-KR-KR - Seoul Guarantee Insurance Company1,024

AS38124#505 DGBDATASYSTEM-AS-KR-KR - iM DS Co.,Ltd.1,024

AS38125#506 FREEWAY-AS-KR-KR - Korea Expressway Corporation1,024

AS38399#508 GOEYJ-AS-KR-KR - Gyeonggi-do Yeoju Office of Education1,024

AS38405#509 GOEKM-AS-KR-KR - Gwang Myeong Office of Education1,024

AS38406#510 GOEHS-AS-KR-KR - Kyeonggi-Do Hwaseong Office of Education1,024

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