AS4538

Name: AS4538 — China Education and Research Network Center
Creator: ipdex

China Education and Research Network Center Education registered in China

4,963IPv4 prefixes

918IPv6 prefixes

39%RPKI-valid

#1,787AS Rank

#2Rank in China

2002-08-01Allocated

China Education and Research Network Center (AS4538) — Education, registered in China. announces 4,963 IPv4 prefixes + 918 IPv6 prefixes. Rank in China: #2. Allocated: 2002-08-01.

IPv4 4,963IPv6 918

Announced prefixes · 5,881

v4 1.184.0.0/15 unknown
v4 1.184.192.0/18 unknown
v4 1.185.0.0/18 unknown
v4 1.185.192.0/18 unknown
v4 1.185.64.0/19 unknown
v4 1.51.0.0/16 unknown
v4 1.51.112.0/24 valid
v4 1.51.120.0/21 unknown
v4 1.51.144.0/20 unknown
v4 1.51.144.0/21 unknown
v4 1.51.152.0/21 unknown
v4 1.51.16.0/20 unknown
v4 1.51.160.0/21 unknown
v4 1.51.168.0/21 unknown
v4 1.51.176.0/20 unknown
v4 1.51.192.0/18 unknown
v4 1.51.3.0/24 valid
v4 1.51.32.0/20 unknown
v4 1.51.48.0/21 unknown
v4 101.4.0.0/14 unknown
v4 101.4.0.0/20 unknown
v4 101.4.128.0/24 valid
v4 101.4.140.0/24 valid
v4 101.4.156.0/24 valid
v4 101.4.16.0/20 unknown
v4 101.4.192.0/18 unknown
v4 101.4.2.0/24 valid
v4 101.4.32.0/20 unknown
v4 101.4.48.0/21 unknown
v4 101.4.56.0/24 valid
v4 101.4.63.0/24 valid
v4 101.4.64.0/20 unknown
v4 101.5.0.0/16 unknown
v4 101.5.0.0/17 unknown
v4 101.5.128.0/17 unknown
v4 101.5.128.0/21 unknown
v4 101.5.136.0/21 unknown
v4 101.5.24.0/21 unknown
v4 101.5.40.0/21 unknown
v4 101.6.0.0/16 unknown
v4 101.6.0.0/17 unknown
v4 101.6.128.0/17 unknown
v4 101.6.16.0/23 unknown
v4 101.6.6.0/24 valid
v4 101.7.0.0/22 unknown
v4 101.7.64.0/18 unknown
v4 101.76.0.0/15 unknown
v4 101.76.0.0/20 unknown
v4 101.76.144.0/20 unknown
v4 101.76.16.0/20 unknown

RPKI: rpki.cloudflare.com · 2026-06-19

— Routing status unavailable

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	5882
2026-06-13	5882
2026-06-14	5880
2026-06-16	5880
2026-06-17	5878
2026-06-19	5881

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AS4538

Announced prefixes · 5,881

Prefix history

AS topology · Customer cone 17

Providers · 12

Peers · 33

Customers · 15

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