Possible BGP hijack

Beginning at 2023-02-02 17:15:33 UTC, we detected a possible BGP hijack.

Prefix 177.97.208.0/21, is normally announced by AS10429 TELEFONICA BRASIL S.A, BR.

But beginning at 2023-02-02 17:15:33, the same prefix (177.97.208.0/21) was also announced by ASN 24400.

This was detected by 5 BGPMon peers.

Expected
Start time: 2023-02-02 17:15:33 UTC
Expected prefix: 177.97.208.0/21
Expected ASN: 10429 (TELEFONICA BRASIL S.A, BR)
Event Details
Detected advertisement: 177.97.208.0/21
Detected Origin ASN 24400 (CMNET-V4SHANGHAI-AS-AP Shanghai Mobile Communications Co.,Ltd., CN)
Detected AS Path 49673 12389 3491 58453 9808 24400
Detected by number of BGPMon peers: 5

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