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AS4538

China Education and Research Network Center
Announced prefixes
3,362
Upstreams
12
Peers
35
Downstreams
11

Adjacent ASNs

UpstreamDownstreamAS174AS174AS1299AS1299AS2914AS2914AS3491AS3491AS4134AS4134AS4837AS4837AS6453AS6453AS6939AS6939+4 more+4 moreAS9405AS9405AS23911AS23911AS24348AS24348AS24361AS24361AS24369AS24369AS131578AS131578AS133111AS133111AS133465AS133465+3 more+3 more35 peer ASNs (exchange traffic as equals, not a hierarchy)Peers ×35AS4538

Neighbor nodes aren't clickable. To look up an ASN, use the ASN lookup page

All Neighbor ASNs

Upstream12

Buys transit from them

  • AS174
  • AS1299
  • AS2914
  • AS3491
  • AS4134
  • AS4837
  • AS6453
  • AS6939
  • AS9808
  • AS23764
  • AS58453
  • AS140570

Peer35

Settlement-free traffic exchange

  • AS4637
  • AS7473
  • AS7497
  • AS7660
  • AS7713
  • AS8359
  • AS8966
  • AS14537
  • AS17639
  • AS18106
  • AS23673
  • AS23855
  • AS24349
  • AS24350
  • AS24352
  • AS24353
  • AS24355
  • AS24357
  • AS24358
  • AS24362
  • AS24363
  • AS24364
  • AS24370
  • AS24371
  • AS24372
  • AS24482
  • AS35280
  • AS39120
  • AS49544
  • AS55720
  • AS132337
  • AS138369
  • AS138371
  • AS138378
  • AS140627

Downstream11

Buys transit from this AS

  • AS9405
  • AS23911
  • AS24348
  • AS24361
  • AS24369
  • AS131578
  • AS133111
  • AS133465
  • AS134169
  • AS139139
  • AS151229

Recent Prefix Changes

latest 50

IP prefixes this ASN started or stopped announcing (derived by diffing successive data syncs).

  • Announced118.228.33.0/242026-08-25
  • Withdrawn118.228.33.0/242026-08-25
  • Announced118.229.33.0/242026-08-25
  • Withdrawn121.249.0.0/202026-08-18
  • Withdrawn121.250.208.0/202026-08-18
  • Withdrawn121.250.224.0/212026-08-18
  • Announced121.249.0.0/202026-08-17
  • Announced121.250.208.0/202026-08-17
  • Announced121.250.224.0/212026-08-17
  • Withdrawn121.250.240.0/202026-08-15
  • Announced121.250.240.0/202026-08-15
  • Withdrawn121.249.0.0/202026-08-13
  • Withdrawn121.250.208.0/202026-08-13
  • Withdrawn121.250.224.0/212026-08-13
  • Announced121.249.0.0/202026-08-12
  • Announced121.250.208.0/202026-08-12
  • Announced121.250.224.0/212026-08-12
  • Withdrawn58.206.192.0/182026-07-31
  • Withdrawn121.251.192.0/202026-07-28
  • Announced121.251.192.0/202026-07-28
  • Announced58.200.21.0/242026-07-28
  • Announced58.200.22.0/242026-07-28
  • Announced58.200.125.0/242026-07-28
  • Announced59.78.171.0/242026-07-28
  • Announced101.4.156.0/242026-07-28
  • Announced113.55.0.0/172026-07-28
  • Announced121.194.224.0/192026-07-28
  • Announced121.248.60.0/242026-07-28
  • Announced121.249.192.0/192026-07-28
  • Announced121.249.224.0/202026-07-28
  • Announced121.251.136.0/212026-07-28
  • Announced121.251.208.0/202026-07-28
  • Announced121.251.224.0/212026-07-28
  • Announced121.251.235.0/242026-07-28
  • Announced121.251.236.0/222026-07-28
  • Announced125.216.41.0/242026-07-28
  • Announced125.216.42.0/232026-07-28
  • Announced125.216.50.0/232026-07-28
  • Announced125.216.52.0/222026-07-28
  • Announced125.216.56.0/232026-07-28
  • Announced125.216.62.0/232026-07-28
  • Announced125.216.68.0/222026-07-28
  • Announced125.216.72.0/212026-07-28
  • Announced125.216.96.0/222026-07-28
  • Announced125.216.106.0/232026-07-28
  • Announced125.216.128.0/222026-07-28
  • Announced125.216.132.0/242026-07-28
  • Announced125.216.135.0/242026-07-28
  • Announced125.216.161.0/242026-07-28
  • Announced125.216.162.0/232026-07-28

Data: local · Updated 2026-08-27 20:49:08