Possible BGP hijack

Beginning at 2021-02-27 09:00:18 UTC, we detected a possible BGP hijack.

Prefix 2001:400::/32, is normally announced by AS293 ESNET, US.

But beginning at 2021-02-27 09:00:18, the same prefix (2001:400::/32) was also announced by ASN 269684.

This was detected by 4 BGPMon peers.

Expected
Start time: 2021-02-27 09:00:18 UTC
Expected prefix: 2001:400::/32
Expected ASN: 293 (ESNET, US)
Event Details
Detected advertisement: 2001:400::/32
Detected Origin ASN 269684 (LANFIBRA TELECOMUNICACOES - EIRELI, BR)
Detected AS Path 52873 266539 269684
Detected by number of BGPMon peers: 4

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