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
	2001:dd9::/48	China Education and Research Network

---

Network Policy

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

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
	AS24348	CERNET2 IX at Tsinghua University	✘	✔

---

Peers

	ASN	Description	IPv4	IPv6
	AS24348	CERNET2 IX at Tsinghua University	✘	✔

aut-num:        AS24302
as-name:        CRIS-CERNET-AS
descr:          CRIS-CERNET
descr:          Tsinghua University
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:  2020-09-03T09:16:24Z
source:         APNIC


organisation:   ORG-CEAR1-AP
org-name:       China Education and Research Network (CERNET)
country:        CN
address:        ********
address:        ********
phone:          ********
fax-no:         ********
# Email removed, Log into bgp.tools to see whois emails/phone numbers
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
source:         APNIC

Last Update: 2026-06-03T03:22:30Z UTC

---

Member of the following AS-SETs

-	Member	ASN Count
RADB	as-hurricanev6	21075
RADB	as2764:as-transit:as7496	3
RIPE	as20965:as-from-tein-to-geant	656
RADB	as-gemnet	2
RADB	as2764:as-customers-apf:as10223	86
APNIC	as23911:as-customers-v6	108
RADB	as2764:as-transit:as9717	3
RADB	as-optus	22368
APNIC	as4538:as-customers	117
APNIC	as-gemnet2	46
RADB	as2764:as-customers:as7496	3
APNIC	as-gemnet	2
APNIC	as45204:as-gemnet	71
ARIN	as293:as-from-singaren-to-esnet	4548
APNIC	as-railcom	34
RADB	as2764:as-customers:as9717	3
LEVEL3	as-gemnet	2
APNIC	as4538:as-customers-v6	111