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	Prefix	Description

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6

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Peers

	ASN	Description	IPv4	IPv6
	AS23911	China Next Generation Internet Beijing IX	✔	✘

aut-num:        AS9401
as-name:        NLC-CN-AS
descr:          National Library of China
descr:          Member of CERNET-CN
descr:          Room 224, Tsinghua University
descr:          Beijing, China
country:        CN
import:         from AS4538 action pref=10; accept AS4538 AS4789 AS7497
import:         from AS4789 action pref=50; accept AS4789 AS4538 AS7497
import:         from AS4134 action pref=10; accept ANY
export:         to AS4538 announce AS9401
export:         to AS4789 announce AS9401
export:         to AS4134 announce AS9401
default:        to AS4134 action pref=10; networks ANY
remarks:        multihome member
admin-c:        JW1-CN
tech-c:         XL1-CN
abuse-c:        AC1685-AP
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:14Z
source:         APNIC

Last Update: 2025-12-26T03:22:22Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as20965:as-from-tein-to-geant	654
ARIN	as293:as-from-transpac-to-esnet	531
ARIN	as293:as-from-singaren-to-esnet	4548
RIPE	as-winfromcernet	9