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	Prefix	Description
	58.102.100.0/24	SK Telecom
	58.102.101.0/24	SK Telecom
	58.102.102.0/24	SK Telecom
	58.102.103.0/24	SK Telecom
	211.63.20.0/24	SEOUL FOREIGN SCHOOL
	222.110.7.0/24	KT
	222.110.8.0/24	KT
	222.110.9.0/24	KT

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS18302	SK Telecom	✔	✘
	AS4766	Korea Telecom	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS18302	SK Telecom	✔	✘
	AS4766	Korea Telecom	✔	✘

aut-num:        AS45393
as-name:        SFS-AS-KR
descr:          SFS
country:        KR
admin-c:        AM1719-AP
tech-c:         AM1719-AP
import:         from AS18302
                action pref=100;
                accept ANY
import:         from AS4766
                action pref=10;
                accept ANY
export:         to AS18302
                announce AS45393
export:         to AS4766
                announce AS45393
mnt-by:         MNT-KRNIC-AP
mnt-irt:        IRT-KRNIC-KR
last-modified:  2022-08-24T07:16:16Z
source:         APNIC

Last Update: 2026-02-18T03:22:27Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-skbroadband	971
RADB	as-kornetbgp	1266
ARIN	as1239:as-customers	4238
RADB	as3491:as-customers-ap	69715
RADB	as-anc-customer-proxy-register	2403
RADB	as3491:as-customers-test	68658
RADB	as-hurricane	24649
NTTCOM	as-hanaro	441
ARIN	as-xo-b	58218