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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
	AS23910	China Next Generation Internet CERNET2	✘	✔
	AS4538	China Education and Research Network Center	✔	✘

aut-num:        AS138378
as-name:        CNGI-KMN-IX-AS-AP
descr:          CERNET2 regional IX at Yunnan University
descr:          CERNET Center
descr:          Beijing 100084, China
country:        CN
org:            ORG-CEAR1-AP
admin-c:        CER-AP
tech-c:         CER-AP
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:  2020-09-03T09:16:20Z
source:         APNIC


organisation:   ORG-CEAR1-AP
org-name:       China Education and Research Network (CERNET)
country:        CN
address:        FIT 3-220,
address:        Tsinghua University
phone:          +86-10-62785983
fax-no:         +86-10-62785933
# Email removed, Log into bgp.tools to see whois emails
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
source:         APNIC

Last Update: 2025-12-30T03:22:22Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
APNIC	as23911:as-customers-v6	108
APNIC	as4538:as-customers	116
APNIC	as4538:as-customers-v6	110
ARIN	as293:as-from-singaren-to-esnet	4548
RIPE	as20965:as-from-tein-to-geant	654