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

AS24349 announces 8 IPv4 prefixes covering 65,280 addresses and 36 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
• 2001:250:205::/48
• 2001:250:207::/48
• 2001:250:20c::/48
• 2001:250:210::/48
• 2001:250:212::/48
• 2001:250:218::/48
• 2001:250:21e::/48
• 2001:250:223::/48
• 2001:250:22d::/48
• 2001:250:22e::/48
• 2001:250:234::/48
• 2001:250:236::/47
• 2001:250:252::/48
• 2001:250:5060::/48
• 2001:da8:ac::/48
• 2001:da8:201::/48
• 2001:da8:204::/48
• 2001:da8:20f::/48
• 2001:da8:21c::/48
• 2001:da8:22d::/48
• 2001:da8:230::/48
• 2001:da8:233::/48
• 2001:da8:234::/46
• 2001:da8:23b::/48
• 2001:da8:240::/48
• 2001:da8:244::/48
• 2001:da8:246::/48
• 2001:da8:253::/48
• 2001:da8:259::/48
• 2001:da8:274::/47
• 2001:da8:279::/48
• 2001:da8:27b::/48
• 2001:da8:27e::/48
• 2401:ec00::/32
• 240c:c001::/32
• 240c:c017::/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