CERNET2 IX at Peking University

BGP inherited
Cluster stats
Netblocks63
All fragments 1,453 blocks across 22 clusters
Cluster ID208785036
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 2 shared RIR contact/maintainer handles
Registry names 1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
63 0 netblocks since 2026-07-05
2026-07-05 peak 63 2026-07-19

IP Ranges (63)

showing 50 of 63 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
162.105.126.0/24 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:205::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:207::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:208::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:20c::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:210::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:212::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:215::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:218::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:21e::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:21f::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:223::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:228::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:22b::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:22d::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:22e::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:230::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:231::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:234::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:236::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:237::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:238::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:23a::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:23c::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:23d::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:251::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:250:5060::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:ac::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:201::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:204::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:20c::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:20f::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:218::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:219::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:21c::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:22d::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:230::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:233::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:234::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:235::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:236::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:237::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:23b::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:240::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:244::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:246::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:253::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:259::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:272::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high
2001:da8:273::/48 CERNET2 IX at Peking University BGP ANNOUNCED ● high

Network trust

what's this?
RPKI hygiene: A how networks compare →
98.4% of checked blocks have valid RPKI ROA coverage (62 of 63)
Possible discrepancies (61)

These blocks are registered to CERNET2 IX at Peking University but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

240c:c001::/32 /32 authorized for AS4538 — China Education and Research Network Center
240c:c017::/32 /32 authorized for AS4538 — China Education and Research Network Center
240c:c019::/32 /32 authorized for AS4538 — China Education and Research Network Center
240c:c02f::/32 /32 authorized for AS4538 — China Education and Research Network Center
2001:250:205::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:207::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:208::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:20c::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:210::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:212::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:215::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:218::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:21e::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:21f::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:223::/48 /48 authorized for AS4538 — China Education and Research Network Center
+46 more — see the REST API

NIC Handles

AS24349 MAINT-CERNET-AP