Possible BGP hijack

Beginning at 2021-02-27 14:48:53 UTC, we detected a possible BGP hijack.

Prefix 2001:559:581::/48, is normally announced by AS33491 COMCAST-33491, US.

But beginning at 2021-02-27 14:48:53, the same prefix (2001:559:581::/48) was also announced by ASN 269684.

This was detected by 2 BGPMon peers.

Expected
Start time: 2021-02-27 14:48:53 UTC
Expected prefix: 2001:559:581::/48
Expected ASN: 33491 (COMCAST-33491, US)
Event Details
Detected advertisement: 2001:559:581::/48
Detected Origin ASN 269684 (LANFIBRA TELECOMUNICACOES - EIRELI, BR)
Detected AS Path 53131 266539 269684
Detected by number of BGPMon peers: 2

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