Possible BGP hijack

Beginning at 2021-12-21 11:24:34, we detected a possible BGP hijack.

Prefix 188.17.224.0/19, Normally announced by AS12389 ROSTELECOM-AS, RU

Starting at 2021-12-21 11:24:34, a more specific route (188.17.226.0/24) was announced by ASN 28267.

This was detected by 51 BGPMon peers.

Expected
Start time: 2021-12-21 11:24:34 UTC
Expected prefix: 188.17.224.0/19
Expected ASN: 12389 (ROSTELECOM-AS, RU)
Event Details
Detected advertisement: 188.17.226.0/24
Detected Origin ASN 28267 (LANTEC COMUNICACAO MULTIMIDIA LTDA, BR)
Detected AS Path 37989 56300 132132 4657 6762 12956 4809 263998 263998 263998 28267
Detected by number of BGPMon peers: 51

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