Possible BGP hijack

Beginning at 2022-08-09 20:36:36 UTC, we detected a possible BGP hijack.

Prefix 2001:252:ff00::/40, is normally announced by AS4538 ERX-CERNET-BKB China Education and Research Network Center, CN.

But beginning at 2022-08-09 20:36:36, the same prefix (2001:252:ff00::/40) was also announced by ASN 4775.

This was detected by 4 BGPMon peers.

Expected
Start time: 2022-08-09 20:36:36 UTC
Expected prefix: 2001:252:ff00::/40
Expected ASN: 4538 (ERX-CERNET-BKB China Education and Research Network Center, CN)
Event Details
Detected advertisement: 2001:252:ff00::/40
Detected Origin ASN 4775 (GLOBE-TELECOM-AS Globe Telecoms, PH)
Detected AS Path 14432 46650 23520 6830 2516 4775
Detected by number of BGPMon peers: 4

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