Possible BGP hijack

Beginning at 2021-05-01 01:21:47 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS28596 B3 S.A. Brasil, Bolsa, Balcao, BR.

But beginning at 2021-05-01 01:21:47, the same prefix ( was also announced by ASN 203.

This was detected by 12 BGPMon peers.

Start time: 2021-05-01 01:21:47 UTC
Expected prefix:
Expected ASN: 28596 (B3 S.A. Brasil, Bolsa, Balcao, BR)
Event Details
Detected advertisement:
Detected Origin ASN 203 (CENTURYLINK-LEGACY-LVLT-203, US)
Detected AS Path 209218 20473 3491 3356 203
Detected by number of BGPMon peers: 12

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