AS212237 Changgong Zhang 🇨🇳 CN
Announcing 8 prefixes, seen at the RIS collectors.
IPv4 prefixes
4
1,280 (5 × /24)
IPv6 prefixes
4
4 × /48
Upstreams
5
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS212237
- Name
- Changgong Zhang
- Organisation
- Phoenix Network
- Country
- 🇨🇳 CN
- RIR
- RIPENCC
- Allocated
- 2020-12-02
- Network type
- Educational/Research
- Traffic levels
- 100-1000Mbps
- Scope
- Global
- Peering policy
- Open
- IRR as-set
- AS-PXNET
- PeeringDB
- net/25366
- Exchanges
- 7
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
8 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 103.31.236.0/23 v4 | RPKI valid | 41 | 3800120473212237 | 2026-09-18 |
| 103.31.236.0/24 v4 | RPKI valid | 46 | 693953667212237 | 2026-09-18 |
| 103.31.238.0/24 v4 | RPKI valid | 43 | 37721917212237 | 2026-09-18 |
| 103.31.239.0/24 v4 | RPKI valid | 46 | 693953667212237 | 2026-09-18 |
| 2403:6380:40::/48 v6 | RPKI valid | 33 | 1763920473212237 | 2026-09-18 |
| 2403:6380:42::/48 v6 | RPKI valid | 33 | 24482917212237 | 2026-09-18 |
| 2a0e:b107:dce::/48 v6 | no ROA | 2 | 58057212237 | 2026-09-18 |
| 2a10:2f00:15a::/48 v6 | no ROA | 2 | 58057212237 | 2026-09-18 |