Summary

Regional Registry:

APNIC

Allocation Status:

Allocated

Allocation Date:

1^st August 2002

Allocated Country:

Traffic Ratio:

Not Disclosed

Network

Contacts

• IPv4 Prefixes
• IPv6 Prefixes

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	1.51.0.0/16	China Education and Research Network		1.51.0.0/16	APNIC
	1.51.16.0/20	~{DO>)RUJuQ'T:~}		1.51.0.0/16	APNIC
	1.51.32.0/20	~{3#V]4sQ'~}		1.51.0.0/16	APNIC
	1.51.48.0/21	~{3#V]4sQ'~}		1.51.0.0/16	APNIC
	1.51.112.0/24	~{3|V]V0R5<<JuQ'T:~}		1.51.0.0/16	APNIC
	1.51.120.0/21	~{:O7JJ&76Q'T:~}		1.51.0.0/16	APNIC
	1.51.144.0/20	~{I=6+E.WSQ'T:~}		1.51.0.0/16	APNIC
	1.51.160.0/21	~{N+7;Q'T:~}		1.51.0.0/16	APNIC
	1.51.168.0/21	~{5BV]Q'T:~}		1.51.0.0/16	APNIC
	1.51.176.0/20	~{5BV]Q'T:~}		1.51.0.0/16	APNIC
	1.51.192.0/18	~{I=6+4sQ'~}		1.51.0.0/16	APNIC
	1.184.0.0/15	China Education and Research Network		1.184.0.0/15	APNIC
	1.184.192.0/18	~{In[Z=LS}:M?FQPMxVw8IMx~}		1.184.0.0/15	APNIC
	1.185.0.0/18	~{9cNw4sQ'~}		1.184.0.0/15	APNIC
	1.185.64.0/19	~{9cNw4sQ'~}		1.184.0.0/15	APNIC
	1.185.192.0/18	~{9cNwJ&764sQ'~}		1.184.0.0/15	APNIC

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	2001:250:22a::/48	CERNET IPv6 Backbone		2001:250::/35	APNIC
	2001:da8:257::/48	China Next Generation Internet CERNET2		2001:da8::/32	APNIC
	2402:e480::/32	CERNET		2402:e480::/32	APNIC

• IPv4 Peers
• IPv6 Peers

Country	ASN	Name	Description	IPv6
	AS23911	CNGI-BJIX-AS-AP	China Next Generation Internet Beijing IX
	AS7497	CSTNET-AS-AP	Computer Network Information Center
	AS4134	CHINANET-BACKBONE	No.31,Jin-rong Street
	AS10026	PACNET	Pacnet Global Ltd
	AS6939	HURRICANE	Hurricane Electric LLC
	AS6453	AS6453	TATA COMMUNICATIONS (AMERICA) INC
	AS4637	ASN-TELSTRA-GLOBAL	Telstra Global
	AS4837	CHINA169-Backbone	CHINA UNICOM China169 Backbone

Country	ASN	Name	Description	IPv4
	AS23911	CNGI-BJIX-AS-AP	China Next Generation Internet Beijing IX
	AS133465	DKU-AS-AP	Duke Kunshan University
	AS23910	CNGI-CERNET2-AS-AP	China Next Generation Internet CERNET2

• IPv4 Upstreams
• IPv6 Upstreams

Country	ASN	Name	Description	IPv6
	AS4134	CHINANET-BACKBONE	No.31,Jin-rong Street
	AS4637	ASN-TELSTRA-GLOBAL	Telstra Global
	AS10026	PACNET	Pacnet Global Ltd
	AS4837	CHINA169-Backbone	CHINA UNICOM China169 Backbone
	AS6453	AS6453	TATA COMMUNICATIONS (AMERICA) INC

IPv4 Upstream Graph

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IPv4 Upstream Graph

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Country	ASN	Name	Description	IPv4
	AS23911	CNGI-BJIX-AS-AP	China Next Generation Internet Beijing IX
	AS23910	CNGI-CERNET2-AS-AP	China Next Generation Internet CERNET2

IPv6 Upstream Graph

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IPv6 Upstream Graph

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• IPv6 Downstreams

Country	ASN	Name	Description
	AS133465	DKU-AS-AP	Duke Kunshan University

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS4538'

% Abuse contact for 'AS4538' is '[email protected]'

aut-num:        AS4538
as-name:        ERX-CERNET-BKB
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing 100084
country:        CN
admin-c:        JW410-AP
tech-c:         JW410-AP
remarks:        This aut-num object created as part of
remarks:        the ER-Transfer from ARIN
mnt-by:         MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
last-modified:  2016-10-17T00:30:08Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-11-26T03:14:01Z
source:         APNIC

person:         Jianping Wu
address:        China Education and Research Network Center
address:        Tsinghua University
address:        Beijing 100084
country:        CN
phone:          +86-10-2595931
e-mail:         [email protected]
nic-hdl:        JW410-AP
remarks:        This person object created as part of the ER-Transfer from ARIN
mnt-by:         MAINT-CN-CERNET
last-modified:  2008-09-04T07:29:20Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.15-43 (WHOIS-NODE1)