CERNET2 IX at Peking University
Data as of 2026-08-16
BGP inherited
Cluster stats
| Netblocks | 64 · 256 IPv4 addresses |
| IPv6 | 63 prefixes (largest 2401:ec00::/32) |
| All fragments | 1,455 blocks across 22 clusters |
| Cluster ID | 222401929 |
| Registry | BGP |
| Customers | find 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 · report an issue | |
Footprint over time
8 weekly snapshots · JSON
64
+1 netblocks since 2026-07-05
2026-07-05
peak 64
2026-08-16
IP Ranges (64)
showing 50 of 64 — 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 |
| 2001:250:252::/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 |
IPv6 ranges (63)
showing the 15 largest allocationsNetwork trust
what's this?
RPKI hygiene: A
how networks compare →
96.9%
of checked blocks have valid RPKI ROA coverage
(62 of 64)
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