Possible BGP hijack

Beginning at 2021-03-01 20:50:47 UTC, we detected a possible BGP hijack.

Prefix 2402:5ec0:1000::/40, is normally announced by AS23724 CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation, CN.

But beginning at 2021-03-01 20:50:47, the same prefix (2402:5ec0:1000::/40) was also announced by ASN 269684.

This was detected by 3 BGPMon peers.

Expected
Start time: 2021-03-01 20:50:47 UTC
Expected prefix: 2402:5ec0:1000::/40
Expected ASN: 23724 (CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation, CN)
Event Details
Detected advertisement: 2402:5ec0:1000::/40
Detected Origin ASN 269684 (LANFIBRA TELECOMUNICACOES - EIRELI, BR)
Detected AS Path 52873 266539 269684
Detected by number of BGPMon peers: 3

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