AS24490 — TEIN2-SG-AP Trans-Eurasia Information Network TEIN2 - SG

AS24490 announces 1 IPv4 prefixes covering 2,048 addresses and 1 IPv6 prefixes.

About this network

The AS handle TEIN2-SG-AP is held by Trans-Eurasia Information Network (TEIN2).

What it's used for

• The address space carries academic and research traffic, evidenced by the netname TEIN2-CERNET and registrant CERNET Helpdesk.
• The AS announces 2048 IPv4 addresses across 1 prefix and 1 IPv6 prefix, while maintaining 17 observed neighbours. This ratio of limited address space against a moderate number of peers suggests a specialized research network rather than a large-scale commercial transit provider.

Notable

• The registrant CERNET Helpdesk aligns with the announcer's identity, confirming the space is managed by the China Education and Research Network.
• The address inventory consists of a single contiguous IPv4 block, 202.179.248.0/21, and one IPv6 prefix, 2001:254:8000::/33.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 202.179.248.0/21
• 2001:254:8000::/33

Upstream networks

• AS11537 Internet2
• AS23855 Singapore Advanced Research and Education Network
• AS7575 Australian Academic and Research Network (AARNet)
• AS38229 Lanka Education & Research Network, NREN
• AS20965 GEANT Vereniging

Downstream networks

• AS7575 Australian Academic and Research Network (AARNet)
• AS24514 MINISTRY OF HIGHER EDUCATION MALAYSIA
• AS45773 PERN AS Content Servie Provider, Islamabad, Pakistan
• AS63961 Bangladesh Research and Education Network (BdREN)
• AS38229 Lanka Education & Research Network, NREN
• AS17579 KISTI
• AS11537 Internet2
• AS9270 National Infomation Society Agency
• AS24489 Trans-Eurasia Information Network (TEIN2) - North
• AS139588 Institute of Technology of Cambodia
• AS141682 APIDT Infrastructure Pty Ltd
• AS20965 GEANT Vereniging
• AS9264 Academia Sinica
• AS24287 National Institute of Informatics

Adjacent networks

• AS38229 Lanka Education & Research Network, NREN
• AS11537 Internet2
• AS7575 Australian Academic and Research Network (AARNet)
• AS24489 Trans-Eurasia Information Network (TEIN2) - North
• AS20965 GEANT Vereniging
• AS7660 Asia Pacific Advanced Network - Japan
• AS24514 MINISTRY OF HIGHER EDUCATION MALAYSIA
• AS23855 Singapore Advanced Research and Education Network
• AS17579 KISTI
• AS24287 National Institute of Informatics
• AS63961 Bangladesh Research and Education Network (BdREN)
• AS45773 PERN AS Content Servie Provider, Islamabad, Pakistan
• AS9885 NKN INTERNET GATEWAY NETWORK
• AS141682 APIDT Infrastructure Pty Ltd
• AS9270 National Infomation Society Agency
• AS9264 Academia Sinica
• AS139588 Institute of Technology of Cambodia