Possible BGP hijack

Beginning at 2020-12-19 05:59:02 UTC, we detected a possible BGP hijack.

Prefix 155.46.132.0/23, is normally announced by AS52925 Ascenty Data Centers e Telecomunicacoes S/A, BR.

But beginning at 2020-12-19 05:59:02, the same prefix (155.46.132.0/23) was also announced by ASN 2688.

This was detected by 35 BGPMon peers.

Expected
Start time: 2020-12-19 05:59:02 UTC
Expected prefix: 155.46.132.0/23
Expected ASN: 52925 (Ascenty Data Centers e Telecomunicacoes S/A, BR)
Event Details
Detected advertisement: 155.46.132.0/23
Detected Origin ASN 2688 (ATGS-MMD-AS, US)
Detected AS Path 201971 6939 6939 2688
Detected by number of BGPMon peers: 35

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