147.248.144.0/20 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 ASRPKI Peers seeing itSample path First seenLast seen
AS1540 Headquarters, USAISC no ROA 43 377213356721270651540 2026-10-20 2026-10-22
AS367 United States Department of Defense (DoD) no ROA 1 2132419002335672127065367 2026-09-18 2026-10-22

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
147.248.0.0/16
RIR
ARIN
Country
πŸ‡ΊπŸ‡Έ US
Status
allocated
Allocated
1991-08-01

Less specific routes

Announced prefixes that contain this one

Nothing less specific is announced.

More specific routes

0 announced prefixes inside this one

Nothing more specific is announced.

Recorded changes

WhenChangeOriginPath
2026-10-20 15:10:50Z origin change AS1540 β†’ AS367 20409234019356255511335672172127065367
2026-10-20 15:10:50Z origin change AS367 β†’ AS1540 2265212993356721721270651540
2026-10-20 15:10:45Z origin change AS367 β†’ AS1540 138309713356721721721721721721721270651540