View

If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	140.115.0.0/16	Taiwan Academic Network

---

Network Policy

Click here to learn more about what this graph means and what makes up a network policy Global Aggregation Policy stoic_mendeleev

Chart Display Options

Display links using non straight lines

Prefixes in selected policy

Load all prefixes in policy

---

How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS18185	National Chiao Tung University	✔	✘

---

Peers

	ASN	Description	IPv4	IPv6
	AS18185	National Chiao Tung University	✔	✘
	AS7539	National Center for High-performance Computing	✔	✘
	AS3462	HiNet (Chunghwa Telecom)	✘	✔

aut-num:        AS18420
as-name:        NCU-TW
descr:          National Central University
descr:          No.300, Jungda Rd, Jhongli City,
descr:          Taoyuan
country:        TW
import:         from AS3462 action pref=100; accept ANY
import:         from AS9676 action pref=100; accept ANY
import:         from AS18182 action pref=100; accept ANY
export:         to AS3462 announce AS18420
export:         to AS9676 announce AS18420
export:         to AS18182 announce AS18420
default:        to AS1659 action pref=10; networks ANY
admin-c:        CL184-AP
tech-c:         SY81-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-TANET-TW
last-modified:  2025-11-06T09:25:57Z
source:         APNIC

Last Update: 2026-06-11T03:22:42Z UTC

---

Member of the following AS-SETs

-	Member	ASN Count
APNIC	as7539:as-twaren	14
RADB	as58453:as-asiaascust	20209
APNIC	as1659:as-tanet	18
APNIC	as-nctu	5
APNIC	as-63529-as-import-as9505	378
APNIC	as58453:as-asiatest	16192
RADB	as-twig	1264
APNIC	as63529:as-63529-as-import-as9505	157
RIPE	as-retn-actual-v4	12810
APNIC	as58453:as-asiaascust	20209
APNIC	as58453:as-asiatest2	15787
RADB	as-seednet	282