AS24349 — CNGI-BJ-IX3-AS-AP - CERNET2 IX at Peking University

AS24349 announces 8 IPv4 prefixes covering 65,280 addresses and 1 IPv6 prefixes.

About this network

CNGI-BJ-IX3-AS-AP is operated by CERNET2 IX at Peking University.

What it's used for

• The address space carries academic and research infrastructure, evidenced by the netnames PKU-CN and BJR-CERNET and the reverse DNS record grid02.phy.pku.edu.cn.
• The AS announces 288 IPv4 addresses and 36 IPv6 prefixes while maintaining only 2 observed neighbours, a ratio consistent with a specialized exchange or internal research network rather than a general transit provider.

Notable

• Registrants for the announced prefixes are China Education and Research Network (CERNET) and CERNET Helpdesk, which aligns with the announcer's identity as a CERNET2 facility.
• The inventory consists of two IPv4 prefixes, 162.105.126.0/24 and 202.38.140.0/27, alongside a set of ten IPv6 /48 blocks within the 2001:250::/32 range.

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

Announced prefixes

• 115.27.0.0/17
• 115.27.128.0/18
• 115.27.192.0/19
• 115.27.224.0/20
• 115.27.240.0/21
• 115.27.248.0/22
• 115.27.252.0/23
• 115.27.255.0/24
• 2401:ec00::/32

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

Routing security

• RPKI: 60 valid, 0 invalid and 7 not-found announcements; 65 ROAs.
• ASPA: none published.
• IRR: 1% of announcements registered; 1 route objects.
• Listed in as-sets: AS-HURRICANEV6, AS20965:AS-FROM-TEIN-TO-GEANT, AS23911:AS-CUSTOMERS-V6, AS293:AS-FROM-SINGAREN-TO-ESNET, AS4538:AS-CUSTOMERS, AS4538:AS-CUSTOMERS-V6.