121.42.0.0/17 RPKI valid
Announced by AS37963 Hangzhou Alibaba Advertising Co.,Ltd.
Origin
| Origin AS | RPKI | Peers seeing it | Sample path | First seen | Last seen |
|---|---|---|---|---|---|
| AS37963 Hangzhou Alibaba Advertising Co.,Ltd. | RPKI valid | 40 | 345495511483737963 | 2026-09-18 | 2026-09-27 |
RPKI
1 ROA covers this prefix
| ROA prefix | Max length | Authorised origin | Trust anchor | Result for this route |
|---|---|---|---|---|
| 121.40.0.0/14 | /24 | AS37963 | apnic | authorises it |
Registry
Who this address space is delegated to, regardless of whether it is routed
- Delegated block
- 121.40.0.0/14
- RIR
- APNIC
- Country
- 🇨🇳 CN
- Status
- allocated
- Allocated
- 2006-05-24
Less specific routes
Announced prefixes that contain this one
| Prefix | Origin | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|---|
| 121.42.0.0/16 v4 | AS37963 Hangzhou Alibaba Advertising Co.,Ltd. | RPKI valid | 40 | 345495511483737963 | 2026-09-18 |
| 121.42.0.0/15 v4 | AS37963 Hangzhou Alibaba Advertising Co.,Ltd. | RPKI valid | 40 | 345495511483737963 | 2026-09-18 |
| 121.40.0.0/14 v4 | AS37963 Hangzhou Alibaba Advertising Co.,Ltd. | RPKI valid | 40 | 345495511483737963 | 2026-09-18 |
More specific routes
2 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 121.42.0.0/18 v4 | AS37963 Hangzhou Alibaba Advertising Co.,Ltd. | RPKI valid | 40 | 2026-09-18 |
| 121.42.64.0/18 v4 | AS37963 Hangzhou Alibaba Advertising Co.,Ltd. | RPKI valid | 40 | 2026-09-18 |