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	Prefix	Description
	202.39.96.0/20	Systex Corporation SYSNET Business Department
	210.63.0.0/19	Systex Corporation SYSNET Business Department
	210.63.32.0/19	Systex Corporation SYSNET Business Department
	210.67.0.0/20	Systex Corporation SYSNET Business Department
	210.67.16.0/20	Systex Corporation SYSNET Business Department
	210.67.32.0/19	Systex Corporation SYSNET Business Department
	210.67.112.0/20	Systex Corporation SYSNET Business Department

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS9924	Taiwan Fixed Network, Telco and Network Service Provider.	✔	✘
	AS4780	Digital United Inc.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS9924	Taiwan Fixed Network, Telco and Network Service Provider.	✔	✘
	AS4780	Digital United Inc.	✔	✘
	AS7481	TWIX Route Servers	✔	✘

aut-num:        AS4783
as-name:        
descr:          SYSTEX CORPORATION
descr:          SYSNET BUSINESS UINT
descr:          Taipei Taiwan R.O.C.
country:        TW
import:         from AS4778 action pref=101; accept ANY
import:         from AS4780 action pref=102; accept ANY
import:         from AS7481 action pref=103; accept ANY
import:         from AS7483 action pref=104; accept ANY
import:         from AS9311 action pref=105; accept ANY
export:         to AS4778 announce ANY
export:         to AS4780 announce ANY
export:         to AS7481 announce ANY
export:         to AS7483 announce ANY
export:         to AS9311 announce ANY
default:        to AS4780 action pref=101; networks ANY
admin-c:        JC4-AP
tech-c:         JC4-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-SYSNET-TW
last-modified:  2025-11-06T09:06:02Z
source:         APNIC

Last Update: 2026-03-13T03:22:25Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-level3-origins-na	0
APNIC	as58453:as-asiaascust	31402
RADB	as-anc-customer-proxy-register	2403
RADB	as3491:as-customers-ap	69904
APNIC	as-hktcustomer	196
NTTCOM	as-tfn-transit1	104
RADB	as-above-as-ap	21
RADB	as-seednet	280
RADB	as-tfn-transit1	104
RADB	as-twig	2018
NTTCOM	as-systex	1
RIPE	as-retn-actual-v4	12735
RADB	as3491:as-customers-na	61331
RADB	as-kddcustomer2	8206
RADB	as58453:as-asiaascust	31402
NTTCOM	as-kgex	13