147.72.252.0/22 RPKI valid 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
AS36407 Software Engineering Institute	RPKI valid	42	34549 6461 46887 36407	2026-09-18	2026-09-22
AS9 Carnegie Mellon University	RPKI valid	1	34927 56655 6939 399855 9	2026-09-18	2026-09-22

RPKI

3 ROAs cover this prefix

ROA prefix	Max length	Authorised origin	Trust anchor	Result for this route
147.72.252.0/22	/24	AS9	arin	wrong origin
147.72.252.0/22	/24	AS36407	arin	authorises it
147.72.0.0/16	/16	AS5050	arin	wrong origin

Registry

Who this address space is delegated to, regardless of whether it is routed

Delegated block: 147.72.0.0/16
RIR: ARIN
Country: 🇺🇸 US
Status: allocated
Allocated: 1991-07-05

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.