Autonomous System Number (ASN)24490
ASN NameTEIN2-SG-AP
Organization NameTsinghua University, Beijing 100084, China
DescriptionTrans-Eurasia Information Network (TEIN2) - SG
CountryCN
TypeEDUCATION
Domain Namecernet.edu.cn
HostAPNIC
Total IPv4 Routes1
Total IPv6 Routes1
Route Objects(Total 2 records)
OriginAS24490
Origin NameTsinghua University, Beijing 100084, China
ISPTrans Eurasia Information Network TEIN2, China Education and Research Network Center
Number of IPs3.961408125713217e+28
OriginAS24490
Origin NameTsinghua University, Beijing 100084, China
ISPTrans Eurasia Information Network TEIN2, China Education and Research Network Center
Number of IPs2048
Down Streams(Total 15 records)
OriginMINISTRY OF HIGHER EDUCATION MALAYSIA
CountryMY
OriginGEANT Vereniging
CountryNL
Up Streams(Total 8 records)
OriginGEANT Vereniging
CountryNL
OriginAPIDT Infrastructure Pty Ltd
CountryAU
OriginAustralian Academic and Research Network
CountryAU
Peers(Total 24 records)
OriginMINISTRY OF HIGHER EDUCATION MALAYSIA
CountryMY
OriginAsia Pacific Advanced Network - Japan
CountryJP
OriginGEANT Vereniging
CountryNL
Contacts
Email Contacts
helpdesk@cernet.edu.cn
Abuse Contacts
abuse@cernet.edu.cn
WHOIS Response
Statustrue
WHOIS Serverwhois.apnic.net
AS Blocks
AS BlockAS23552 - AS24575
Description
APNIC ASN block
Admin Contacts
HM20-AP
Tech Contacts
HM20-AP
Remarks
These AS numbers are further assigned by APNIC
to APNIC members and end-users in the APNIC region
AS23889 has been transfered to AfriNIC
Maintained By
APNIC-HM
Maintained Lower
APNIC-HM
Date Updated2009-09-29
SourceAPNIC
AS BlockAS24431 - AS24517
Description
APNIC ASN block
Admin Contacts
HM20-AP
Tech Contacts
HM20-AP
Remarks
These AS numbers are further assigned by APNIC
to APNIC members and end-users in the APNIC region
Maintained By
APNIC-HM
Maintained Lower
APNIC-HM
Date Updated2008-09-04
SourceAPNIC
Aut Numbers
Aut NumberAS24490
AS NameTEIN2-SG-AP
CountryCN
Description
Trans-Eurasia Information Network (TEIN2) - SG
China Education and Research Network Center
Tsinghua University, Beijing 100084, China
Admin Contacts
CER-AP
Tech Contacts
CER-AP
Abuse Contacts
AC1685-AP
Maintained IRT
IRT-CERNET-AP
Maintained Lower
MAINT-CERNET-AP
Maintained Routes
MAINT-CERNET-AP
Maintained By
APNIC-HM
Date Updated2020-09-03
SourceAPNIC
IRT Details
IRT HandleIRT-CERNET-AP
IRT Address
Network Center,
FIT-3-220, Tsinghua Univ
Beijing 100084, China
IRT CityBeijing
Administrative Contacts
HandleCER-AP
NameCERNET Helpdesk
CountryCN
Address
CERNET Center
Beijing 100084, China
Email
helpdesk@cernet.edu.cn
Phone
+86-10-6278-4049
Fax
+86-10-6278-5933
Admin Contacts
XL1-CN
Tech Contacts
SZ2-AP
Remarks
abuse@cernet.edu.cn
Maintained By
MAINT-CERNET-AP
Date Updated2020-09-03
SourceAPNIC
Technical Contacts
HandleCER-AP
NameCERNET Helpdesk
CountryCN
Address
CERNET Center
Beijing 100084, China
Email
helpdesk@cernet.edu.cn
Phone
+86-10-6278-4049
Fax
+86-10-6278-5933
Admin Contacts
XL1-CN
Tech Contacts
SZ2-AP
Remarks
abuse@cernet.edu.cn
Maintained By
MAINT-CERNET-AP
Date Updated2020-09-03
SourceAPNIC
Abuse Contacts
HandleAC1685-AP
NameABUSE CERNETAP
CountryZZ
Address
Network Center,
FIT-3-220, Tsinghua Univ
Beijing 100084, China
Email
abuse@cernet.edu.cn
Abuse Mailbox
abuse@cernet.edu.cn
Phone
+86-10-62784301
Admin Contacts
CER-AP
Tech Contacts
CER-AP
Remarks
Generated from irt object IRT-CERNET-AP
abuse@cernet.edu.cn was validated on 2026-03-05
Maintained By
APNIC-ABUSE
Date Updated2026-03-05
SourceAPNIC
