156.40.0.0/16 no ROA
Announced by AS3527 National Institutes of Health.
Origin
| Origin AS | RPKI | Peers seeing it | Sample path | First seen | Last seen |
|---|---|---|---|---|---|
| AS3527 National Institutes of Health | no ROA | 43 | 1490711164108863527 | 2026-09-18 | 2026-09-30 |
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
No delegation record covers this prefix.
Less specific routes
Announced prefixes that contain this one
Nothing less specific is announced.
More specific routes
7 announced prefixes inside this one
| Prefix | Origin | RPKI | Peers | First seen |
|---|---|---|---|---|
| 156.40.53.0/24 v4 | AS30387 National Institutes of Health | RPKI valid | 42 | 2026-09-18 |
| 156.40.93.0/24 v4 | AS19050 U.S. Department of Health & Human Services | RPKI valid | 42 | 2026-09-18 |
| 156.40.94.0/24 v4 | AS19050 U.S. Department of Health & Human Services | RPKI valid | 41 | 2026-09-18 |
| 156.40.95.0/24 v4 | AS19050 U.S. Department of Health & Human Services | RPKI valid | 40 | 2026-09-18 |
| 156.40.98.0/23 v4 | AS30387 National Institutes of Health | RPKI valid | 42 | 2026-09-18 |
| 156.40.197.0/24 v4 | AS19050 U.S. Department of Health & Human Services | RPKI valid | 42 | 2026-09-18 |
| 156.40.246.0/24 v4 | AS19050 U.S. Department of Health & Human Services | RPKI valid | 42 | 2026-09-18 |