ASN AS24489 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS24489?

AS24489 is listed under Tsinghua University, Beijing 100084, China.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS24489 Tsinghua University, Beijing 100084, China

Tsinghua University, Beijing 100084, China cernet.edu.cn

CN 3 Routes

AS Data

AS24489

AS24489 – Tsinghua University, Beijing 100084, China

AS Number	24489
AS Name	TEIN2-NORTH-AP
Organization	Tsinghua University, Beijing 100084, China()
Country	CN
Website	cernet.edu.cn
Number of IPv4 Routes	1
Number of IPv6 Routes	2
ASN type	EDUCATION
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS24489 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2001:254::/33	AS24489	Tsinghua University, Beijing 100084, China	Trans Eurasia Information Network TEIN2, China Education and Research Network Center	~40×10²⁷
2001:254::/32	AS24489	Tsinghua University, Beijing 100084, China	Trans Eurasia Information Network TEIN2, China Education and Research Network Center	~79×10²⁷
202.179.240.0/20	AS4538	Tsinghua University	Trans Eurasia Information Network TEIN2, China Education and Research Network Center	4096

Raw Whois Response

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

% Information related to 'AS23552 - AS24575'

as-block:       AS23552 - AS24575
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
remarks:        AS23889 has been transfered to AfriNIC
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2009-09-29T06:04:16Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS24431 - AS24517'

as-block:       AS24431 - AS24517
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2008-09-04T06:40:26Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS24489'

% Abuse contact for 'AS24489' is 'abuse@cernet.edu.cn'

aut-num:        AS24489
as-name:        TEIN2-NORTH-AP
descr:          Trans-Eurasia Information Network (TEIN2) - North
descr:          China Education and Research Network Center
descr:          Tsinghua University, Beijing 100084, China
country:        CN
import:         from AS4538 action pref=10; accept ANY
import:         from AS7660 action pref=10; accept ANY
import:         from AS20965 action pref=10; accept ANY
export:         to AS4538 announce AS24489
export:         to AS7660 announce AS24489
export:         to AS20965 announce AS24489
default:        to AS20965 action pref=10; networks ANY
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:  2020-09-03T09:16:23Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Center,
address:        FIT-3-220, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
source:         APNIC

role:           CERNET Helpdesk
address:        CERNET Center
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-4049
fax-no:         +86-10-6278-5933
e-mail:         helpdesk@cernet.edu.cn
remarks:        abuse@cernet.edu.cn
admin-c:        XL1-CN
tech-c:         SZ2-AP
nic-hdl:        CER-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2020-09-03T09:14:12Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-UK2)

Parsed Whois Response

Peers

AS Number	Description	Country
AS7660	Asia Pacific Advanced Network - Japan	JP
AS23911	CNGI CERNET	CN
AS20965	GEANT Vereniging	NL
AS17579	KISTI	KR
AS24490	Tsinghua University, Beijing 100084, China	CN
AS4538	Tsinghua University	CN
AS137207	Joint Universities Computer Centre Limited	HK
AS24475	Office of Info.Tech. Admin. for Educational Development	TH
AS9270	National Infomation Society Agency	KR
AS10076	Mongolian Technical University, Computer Science Mgmt School	MN

Upstreams

AS Number	Description	Country
AS23911	CNGI CERNET	CN
AS24490	Tsinghua University, Beijing 100084, China	CN
AS24287	National Institute of Informatics	JP

Downstreams

AS Number	Description	Country
AS10076	Mongolian Technical University, Computer Science Mgmt School	MN
AS9821	Advanced Science and Technology Institute	PH
AS23911	CNGI CERNET	CN
AS17579	KISTI	KR
AS24490	Tsinghua University, Beijing 100084, China	CN
AS24475	Office of Info.Tech. Admin. for Educational Development	TH
AS24287	National Institute of Informatics	JP

Contacts

Email Contacts

helpdesk@cernet.edu.cn

Abuse Contacts

abuse@cernet.edu.cn

Legacy Routes

202.179.240.0/21

ASN Lookup Tool

ASN Summary