221.3.128.0/17 RPKI valid
Announced by AS4837 China Unicom Backbone.
Origin
| Origin AS | RPKI | Peers seeing it | Sample path | First seen | Last seen |
|---|---|---|---|---|---|
| AS4837 China Unicom Backbone | RPKI valid | 39 | 70184837 | 2026-09-18 | 2026-11-08 |
RPKI
1 ROA covers this prefix
| ROA prefix | Max length | Authorised origin | Trust anchor | Result for this route |
|---|---|---|---|---|
| 221.3.128.0/17 | /17 | AS4837 | apnic | authorises it |
Registry
Who this address space is delegated to, regardless of whether it is routed
- Delegated block
- 221.3.128.0/17
- RIR
- APNIC
- Country
- 🇨🇳 CN
- Status
- allocated
- Allocated
- 2003-01-08
Less specific routes
Announced prefixes that contain this one
Nothing less specific is announced.
More specific routes
5 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 221.3.136.0/24 v4 | AS4837 China Unicom Backbone | RPKI valid | 40 | 2026-09-18 |
| 221.3.140.0/22 v4 | AS4837 China Unicom Backbone | RPKI valid | 40 | 2026-09-18 |
| 221.3.192.0/22 v4 | AS4837 China Unicom Backbone | RPKI valid | 40 | 2026-09-18 |
| 221.3.224.0/22 v4 | AS4837 China Unicom Backbone | RPKI valid | 40 | 2026-09-18 |
| 221.3.240.0/22 v4 | AS4837 China Unicom Backbone | RPKI valid | 40 | 2026-09-18 |