Data as of Nov 5, 2026

211.172.96.0/21

No anonymizer space · no proxy exits in 30 days

Sejong Networks

Announcement

this exact prefix

No RPKI

Announced by

AS9848

Type

Internet provider

Risk

30 / 100 · Medium

Recently moved

Recent change

New origin Jul 2026

from AS18305 Posco DX, after 21.1 years unannounced

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

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	SejongNetworks.co.ltd	MAINT-AS4670	Aug 7, 2026

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
211.172.96.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.96.0/24	AS9845	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	May 4, 2008
211.172.97.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.97.0/24	AS10155	RADB	Proxy-Registered Route Object by LG Dacom(AS3786)	MAINT-AS3786	Nov 13, 2023
211.172.97.0/24	AS10155	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	Jan 7, 2010
211.172.98.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.98.0/24	AS10155	RADB	Proxy-Registered Route Object by LG Dacom(AS3786)	MAINT-AS3786	Nov 13, 2023
211.172.98.0/24	AS10155	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	Jan 7, 2010
211.172.99.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.99.0/24	AS10155	RADB	Proxy-Registered Route Object by LG Dacom(AS3786)	MAINT-AS3786	Nov 13, 2023
211.172.99.0/24	AS10155	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	Jan 7, 2010
211.172.100.0/22	AS45365	RADB	AS45365	MAINT-AS9318	Nov 13, 2023
211.172.100.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.100.0/24	AS10155	RADB	Proxy-Registered Route Object by LG Dacom(AS3786)	MAINT-AS3786	Nov 13, 2023
211.172.100.0/24	AS10155	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	Jan 7, 2010
211.172.101.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.101.0/24	AS10155	RADB	Proxy-Registered Route Object by LG Dacom(AS3786)	MAINT-AS3786	Nov 13, 2023
211.172.101.0/24	AS10155	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	Jan 7, 2010
211.172.102.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.102.0/24	AS10155	RADB	Proxy-Registered Route Object by LG Dacom(AS3786)	MAINT-AS3786	Nov 13, 2023
211.172.102.0/24	AS10155	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	Jan 7, 2010
211.172.103.0/24	AS9845	RADB	SejongTelecom.co.ltd	MAINT-AS4670	Nov 13, 2023
211.172.103.0/24	AS10155	RADB	Proxy-Registered Route Object by LG Dacom(AS3786)	MAINT-AS3786	Nov 13, 2023
211.172.103.0/24	AS10155	NTTCOM	proxy for HANARO TELECOM route	MAINT-HANARO	Jan 7, 2010

211.172.96.0/21

Announcements

Covering announcements

Network & registry

AS9848

Covering aggregate above, the prefix's own history below

Routing history

History

Route objects on the exact prefix

Route objects inside

Registration for this announcement

Abuse contact