40.27.174.0/23 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
AS33651 Comcast Cable Communications, LLC	RPKI valid	30	7018 7922 33651	2026-09-18	2026-09-27
AS33667 Comcast Cable Communications, LLC	RPKI valid	13	37721 3356 33667	2026-09-18	2026-09-27

RPKI

3 ROAs cover this prefix

ROA prefix	Max length	Authorised origin	Trust anchor	Result for this route
40.27.174.0/23	/24	AS33651	arin	authorises it
40.27.174.0/23	/24	AS33667	arin	wrong origin
40.27.174.0/23	/24	AS55201	arin	wrong origin

Registry

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

Delegated block: 40.27.0.0/16
RIR: ARIN
Country: 🇺🇸 US
Status: allocated
Allocated: 1991-04-23

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

When	Change	Origin	Path
2026-09-27 04:07:19Z	origin change	AS33667 → AS33651	852 7922 33651
2026-09-27 03:51:45Z	origin change	AS33651 → AS33667	17639 3356 33667
2026-09-26 02:35:32Z	origin change	AS33667 → AS33651	328840 327727 174 7922 33651
2026-09-26 01:27:00Z	origin change	AS33651 → AS33667	48185 3356 33667
2026-09-24 09:10:32Z	origin change	AS33667 → AS33651	852 7922 33651
2026-09-23 18:36:48Z	origin change	AS33651 → AS33667	14907 3356 33667
2026-09-23 16:27:32Z	origin change	AS33667 → AS33651	328840 327727 174 7922 33651
2026-09-23 10:56:08Z	origin change	AS33651 → AS33667	37721 3356 33667
2026-09-22 06:20:28Z	origin change	AS33667 → AS33651	328840 327727 174 7922 33651
2026-09-22 06:19:49Z	origin change	AS33651 → AS33667	37721 3356 33667
2026-09-21 05:36:13Z	origin change	AS33667 → AS33651	204092 20766 1299 7922 33651
2026-09-21 05:36:03Z	origin change	AS33651 → AS33667	204092 34019 35625 3356 33667
2026-09-21 05:34:49Z	origin change	AS33667 → AS33651	204092 20766 1299 7922 33651
2026-09-21 05:34:42Z	origin change	AS33651 → AS33667	204092 34019 35625 3356 33667
2026-09-19 18:41:15Z	origin change	AS33667 → AS33651	328840 327727 174 7922 33651
2026-09-19 17:02:03Z	origin change	AS33651 → AS33667	44393 35710 4809 3356 33667
2026-09-18 20:58:25Z	origin change	AS33667 → AS33651	328840 327727 174 7922 33651
2026-09-18 20:17:32Z	origin change	AS33651 → AS33667	49673 3216 3356 33667
2026-09-18 15:17:37Z	origin change	AS33667 → AS33651	328840 327727 174 7922 33651
2026-09-18 14:40:05Z	origin change	AS33651 → AS33667	49673 12389 3356 33667
2026-09-18 14:02:33Z	origin change	AS33667 → AS33651	328840 327727 174 7922 33651
2026-09-18 10:17:05Z	origin change	AS33651 → AS33667	49673 12389 3356 33667
2026-09-18 05:36:26Z	origin change	AS33667 → AS33651	22652 1299 7922 33651
2026-09-18 04:09:57Z	origin change	AS33667 → AS33651	22652 1299 7922 33651