CERNET2 IX at University of Science and Technology of China
BGP inherited
Cluster stats
| Netblocks | 15 · 17,394 IPv4 addresses |
| All fragments | 136 blocks across 2 clusters |
| Cluster ID | 213150795 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 1 shared RIR contact/maintainer handle |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
15
0 netblocks since 2026-07-05
2026-07-05
peak 15
2026-07-19
IP Ranges (15)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 121.251.0.0/24 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.0.0/20 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.16.0/21 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.24.0/23 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.26.0/23 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.28.0/23 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.32.0/22 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.36.0/23 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.48.0/23 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.50.0/23 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.52.0/24 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.56.0/23 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.64.0/20 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 121.251.88.0/21 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
| 2400:b600::/32 | CERNET2 IX at University of Science and Technology of China | BGP | ANNOUNCED | ● high |
Network trust
what's this?
RPKI hygiene: D
how networks compare →
20.0%
of checked blocks have valid RPKI ROA coverage
(3 of 15)
No discrepancies found among checked blocks.
NIC Handles
AS24362