AS24352 — CNGI-TJN-IX-AS-AP CERNET2 IX at Tianjin University

AS24352 announces 4 IPv4 prefixes covering 8,192 addresses and 21 IPv6 prefixes.

About this network

CNGI-TJN-IX-AS-AP is operated by CERNET2 IX at Tianjin University.

What it's used for

• The address space carries China Education and Research Network (CERNET) traffic, with all four IPv4 prefixes registered under the netname BJR-CERNET and registrant China Education and Research Network (CERNET).
• The AS announces 8192 IPv4 addresses across 4 prefixes and 24 IPv6 prefixes, while maintaining only 2 observed neighbours, a ratio consistent with an access or exchange point role within the academic network rather than a transit provider.

Notable

• Registrants for all announced IPv4 prefixes align with the announcer, listing China Education and Research Network (CERNET) and CERNET Helpdesk as the responsible parties.
• The inventory consists of four distinct IPv4 blocks in the 202.113.0.0/16 range and a set of IPv6 prefixes under 2001:250::/32 and 2001:da8::/32, reflecting the dual-stack infrastructure of the Chinese academic backbone.

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

Announced prefixes

• 202.113.164.0/22
• 202.113.192.0/20
• 202.113.240.0/22
• 202.113.248.0/21
• 2001:250:401::/48
• 2001:250:402::/47
• 2001:250:404::/46
• 2001:250:408::/47
• 2001:250:40d::/48
• 2001:250:40e::/47
• 2001:da8:a6::/48
• 2001:da8:a001::/48
• 2001:da8:a002::/48
• 2001:da8:a005::/48
• 2001:da8:a006::/47
• 2001:da8:a008::/45
• 2001:da8:a010::/44
• 2001:da8:a01e::/47
• 2001:da8:a020::/47
• 2001:da8:a023::/48
• 2001:da8:a024::/47
• 2001:da8:a027::/48
• 2001:da8:a028::/46
• 2403:ac00::/32
• 240c:c220::/31

Upstream networks

• AS23910 China Next Generation Internet CERNET2
• AS4538 China Education and Research Network Center

Adjacent networks

• AS23910 China Next Generation Internet CERNET2
• AS4538 China Education and Research Network Center