Possible BGP hijack

Beginning at 2020-05-31 20:00:36 UTC, we detected a possible BGP hijack.

Prefix 156.238.0.0/16, is normally announced by AS35916 MULTA-ASN1, US.

But beginning at 2020-05-31 20:00:36, the same prefix (156.238.0.0/16) was also announced by ASN 53142.

This was detected by 5 BGPMon peers.

Expected
Start time: 2020-05-31 20:00:36 UTC
Expected prefix: 156.238.0.0/16
Expected ASN: 35916 (MULTA-ASN1, US)
Event Details
Detected advertisement: 156.238.0.0/16
Detected Origin ASN 53142 (Friburgo Online LTDA ME, BR)
Detected AS Path 28300 53142
Detected by number of BGPMon peers: 5

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