67.221.16.0/20 no ROA MOAS
Announced by 2 different origins, which is either a deliberate multi-origin setup or a hijack.
This prefix is announced by more than one AS. Compare how many collector
peers see each origin below: a hijack is usually visible as a second
origin seen by far fewer peers than the legitimate one.
Origins
| Origin AS | RPKI | Peers seeing it | Sample path | First seen | Last seen |
|---|---|---|---|---|---|
| AS11584 New York City Health & Hospitals Corporation | no ROA | 32 | 37721335611584 | 2026-09-18 | 2026-10-25 |
| AS46996 New York City Health & Hospitals Corporation | no ROA | 12 | 2448261285400446996 | 2026-09-18 | 2026-10-25 |
RPKI
No ROA covers this prefix
No ROA covers this prefix, so origin validation returns "unknown". That is not a fault; most of the table is still unsigned.
Registry
Who this address space is delegated to, regardless of whether it is routed
- Delegated block
- 67.221.16.0/20
- RIR
- ARIN
- Country
- 🇺🇸 US
- Status
- allocated
- Allocated
- 2009-06-01
Less specific routes
Announced prefixes that contain this one
Nothing less specific is announced.
More specific routes
8 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 67.221.16.0/21 v4 | AS46996 New York City Health & Hospitals Corporation | no ROA | 44 | 2026-09-18 |
| 67.221.16.0/24 v4 | AS46996 New York City Health & Hospitals Corporation | no ROA | 43 | 2026-09-18 |
| 67.221.18.0/24 v4 | AS46996 New York City Health & Hospitals Corporation | no ROA | 43 | 2026-09-18 |
| 67.221.19.0/24 v4 | AS46996 New York City Health & Hospitals Corporation | no ROA | 44 | 2026-09-18 |
| 67.221.24.0/21 v4 | AS11584 New York City Health & Hospitals Corporation | no ROA | 44 | 2026-09-18 |
| 67.221.24.0/24 v4 | AS11584 New York City Health & Hospitals Corporation | no ROA | 43 | 2026-09-18 |
| 67.221.26.0/24 v4 | AS11584 New York City Health & Hospitals Corporation | no ROA | 43 | 2026-09-18 |
| 67.221.27.0/24 v4 | AS11584 New York City Health & Hospitals Corporation | no ROA | 44 | 2026-09-18 |