57.140.228.0/24 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
AS19527 Google LLC (Google Cloud)	RPKI valid	28	34549 174 19527	2026-09-18	2026-10-15
AS15169 Google LLC	RPKI valid	13	17639 15169	2026-09-18	2026-10-15

RPKI

5 ROAs cover this prefix

ROA prefix	Max length	Authorised origin	Trust anchor	Result for this route
57.140.192.0/18	/24	AS15169	arin	wrong origin
57.140.192.0/18	/24	AS19527	arin	authorises it
57.140.192.0/18	/24	AS139070	arin	wrong origin
57.140.192.0/18	/24	AS396982	arin	wrong origin
57.140.0.0/16	/24	AS62654	arin	wrong origin

Registry

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

Delegated block: 57.140.0.0/16
RIR: ARIN
Country: 🇺🇸 US
Status: allocated
Allocated: 2022-08-23

Less specific routes

Announced prefixes that contain this one

Prefix	Origin	RPKI	Peers	Sample path	First seen
57.140.192.0/18 v4	AS19527 Google LLC (Google Cloud)	RPKI valid	15	6939 19527	2026-09-18
57.140.192.0/18 v4	AS15169 Google LLC	RPKI valid	36	34549 15169	2026-09-18

More specific routes

0 announced prefixes inside this one

Nothing more specific is announced.

Recorded changes

When	Change	Origin	Path
2026-10-15 08:03:34Z	origin change	AS15169 → AS19527	3549 3356 9002 19527
2026-10-15 08:03:08Z	origin change	AS19527 → AS15169	4608 1221 4637 15169
2026-10-15 00:10:57Z	origin change	AS15169 → AS19527	328840 327727 174 19527
2026-10-14 18:07:11Z	origin change	AS19527 → AS15169	55720 15169
2026-10-14 16:08:38Z	origin change	AS15169 → AS19527	29504 39392 174 19527
2026-10-14 16:08:22Z	origin change	AS19527 → AS15169	37721 1273 15169
2026-10-13 14:34:32Z	origin change	AS15169 → AS19527	328840 327727 174 19527
2026-10-13 06:57:54Z	origin change	AS19527 → AS15169	57821 12586 3257 15169
2026-10-12 18:35:18Z	origin change	AS15169 → AS19527	37721 174 19527
2026-10-12 15:55:48Z	origin change	AS19527 → AS15169	4608 1221 4637 15169
2026-10-12 15:02:29Z	origin change	AS15169 → AS19527	328840 327727 174 19527
2026-10-12 12:44:15Z	origin change	AS19527 → AS15169	57821 12586 3257 15169
2026-10-11 06:53:10Z	origin change	AS15169 → AS19527	328840 327727 174 19527
2026-10-10 23:40:09Z	origin change	AS19527 → AS15169	17639 15169
2026-10-10 19:33:57Z	origin change	AS15169 → AS19527	48185 3356 9002 19527
2026-10-09 13:20:38Z	origin change	AS19527 → AS15169	17639 15169
2026-10-09 08:59:21Z	origin change	AS15169 → AS19527	328840 327727 174 19527
2026-10-09 08:59:21Z	origin change	AS15169 → AS19527	328840 327727 174 19527
2026-10-09 08:26:34Z	origin change	AS19527 → AS15169	57821 12586 3257 15169
2026-10-09 08:26:34Z	origin change	AS19527 → AS15169	57821 12586 3257 15169
2026-10-08 22:51:00Z	origin change	AS15169 → AS19527	48185 1299 174 19527
2026-10-08 22:35:58Z	origin change	AS19527 → AS15169	4608 1221 4637 15169
2026-10-08 22:33:34Z	origin change	AS15169 → AS19527	34927 1299 174 19527
2026-10-08 12:01:43Z	origin change	AS19527 → AS15169	4608 1221 4637 15169
2026-10-08 11:03:02Z	origin change	AS15169 → AS19527	3549 3356 9002 19527
2026-10-07 17:55:06Z	origin change	AS19527 → AS15169	49134 53356 6939 15169
2026-10-05 22:22:32Z	origin change	AS15169 → AS19527	50304 1299 174 19527
2026-10-05 22:02:47Z	origin change	AS19527 → AS15169	49673 12389 3257 15169
2026-10-02 13:38:01Z	origin change	AS15169 → AS19527	328840 327727 174 19527
2026-10-02 08:34:14Z	origin change	AS19527 → AS15169	17639 15169
2026-10-01 15:10:25Z	origin change	AS15169 → AS19527	852 3320 9002 19527