ASN Lookup Tool

Tsinghua University, Beijing 100084, China cernet.edu.cn CN CN 1 Routes

AS Data

AS24490

AS24490Tsinghua University, Beijing 100084, China

AS Number 24490
AS Name TEIN2-SG-AP
Organization Tsinghua University, Beijing 100084, China()
Country CN
Website cernet.edu.cn
Number of IPv4 Routes 0
Number of IPv6 Routes 1
ASN type EDUCATION
Registry APNIC
Date Allocated N/A

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Use ASN data for AS24490 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
2001:254:8000::/33 ~40×10²⁷

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 'AS24490'

% Abuse contact for 'AS24490' is 'abuse@cernet.edu.cn'

aut-num:        AS24490
as-name:        TEIN2-SG-AP
descr:          Trans-Eurasia Information Network (TEIN2) - SG
descr:          China Education and Research Network Center
descr:          Tsinghua University, Beijing 100084, China
country:        CN
import:         from AS20965 action pref=10; accept ANY
import:         from AS7660 action pref=10; accept ANY
import:         from AS9270 action pref=10; accept ANY
export:         to AS20965 announce AS24490
export:         to AS7660 announce AS24490
export:         to AS9270 announce AS24490
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:  2020-09-03T09:16:20Z
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-US2)

Parsed Whois Response

Peers

AS Number Description Country
AS24514 MINISTRY OF HIGHER EDUCATION MALAYSIA MY
AS7660 Asia Pacific Advanced Network - Japan JP
AS20965 GEANT Vereniging NL
AS24489 Trans-Eurasia Information Network (TEIN2) - North CN
AS17579 KISTI KR
AS38229 Lanka Education and Research Network LK
AS45773 PERN AS Content Servie Provider, Islamabad, Pakistan PK
AS11537 Internet2 US
AS9270 National Infomation Society Agency KR
AS7575 Australian Academic and Research Network (AARNet) AU

Upstreams

AS Number Description Country
AS20965 GEANT Vereniging NL
AS141682 APIDT Infrastructure Pty Ltd AU
AS7575 Australian Academic and Research Network AU
AS23855 SingAREN SG
AS11537 Internet2 US
AS9885 National Knowledge Network IN
AS24489 Tsinghua University, Beijing 100084, China CN
AS7660 Asia Pacific Advanced Network Japan JP

Downstreams

AS Number Description Country
AS24514 MINISTRY OF HIGHER EDUCATION MALAYSIA MY
AS20965 GEANT Vereniging NL
AS17579 KISTI KR
AS38229 Lanka Education and Research Network LK
AS45773 PERN AS Content Servie Provider, Islamabad, Pakistan PK
AS11537 Internet2 US
AS9270 National Infomation Society Agency KR
AS63961 Bangladesh Research and Education Network BdREN BD
AS141682 APIDT Infrastructure Pty Ltd AU
AS7575 Australian Academic and Research Network AU

Contacts

Legacy Routes

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Frequently Asked Questions

ASN AS24490 is an Autonomous System Number used to identify a network for BGP internet routing.
AS24490 is listed under Tsinghua University, Beijing 100084, China.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.