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Data as of Nov 7, 2026

211.172.104.0/21

No anonymizer space · no proxy exits in 30 days

Sejong Networks

Announcement

this exact prefix

No RPKI

Announced by

Type

Internet provider

Risk

0 / 100 · Low

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Holder	RPKI
211.172.96.0/20 since Aug 2025	AS9848	Internet provider	Sejong Networks

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Origin network

AS9848

KR

Name: Sejong Networks
Type: Internet provider
Registered: Feb 4, 2000
Domain: sejongnetworks.com
Website: en.sejongnetworks.com/
Industry: Internet Service Provider (ISP)
Spamhaus ASN-DROP: not listed

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS9318 not the origin	NTTCOM	Proxy-registered route object	MAINT-AS9304	Jan 10, 2005
AS9318 not the origin	RADB	SK Broadband	MAINT-AS9318	Nov 13, 2023
AS9848	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 11, 2025

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
211.172.104.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023
211.172.105.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023
211.172.106.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023
211.172.107.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023
211.172.108.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023
211.172.109.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023
211.172.110.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023
211.172.111.0/24	AS38669	RADB	AS38669	MAINT-AS9318	Nov 13, 2023