221.199.0.0/17 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 | 41 | 3454955114837 | 2026-09-18 | 2026-09-18 |
RPKI
1 ROA covers this prefix
| ROA prefix | Max length | Authorised origin | Trust anchor | Result for this route |
|---|---|---|---|---|
| 221.199.0.0/17 | /17 | AS4837 | apnic | authorises it |
Registry
Who this address space is delegated to, regardless of whether it is routed
No delegation record covers this prefix.
Less specific routes
Announced prefixes that contain this one
Nothing less specific is announced.
More specific routes
4 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 221.199.0.0/19 v4 | AS4837 China Unicom Backbone | RPKI valid | 41 | 2026-09-18 |
| 221.199.1.0/24 v4 | AS4837 China Unicom Backbone | RPKI valid | 40 | 2026-09-18 |
| 221.199.32.0/20 v4 | AS4837 China Unicom Backbone | RPKI valid | 41 | 2026-09-18 |
| 221.199.82.0/24 v4 | AS9929 China Unicom Industrial Internet Backbone | RPKI valid | 41 | 2026-09-18 |