Possible BGP hijack

Beginning at 2022-09-28 18:38:40 UTC, we detected a possible BGP hijack.

Prefix 170.84.37.0/24, is normally announced by AS265019 NEX TELECOM LTDA ME, BR.

But beginning at 2022-09-28 18:38:40, the same prefix (170.84.37.0/24) was also announced by ASN 12956.

This was detected by 69 BGPMon peers.

Expected
Start time: 2022-09-28 18:38:40 UTC
Expected prefix: 170.84.37.0/24
Expected ASN: 265019 (NEX TELECOM LTDA ME, BR)
Event Details
Detected advertisement: 170.84.37.0/24
Detected Origin ASN 12956 (TELEFONICA TELXIUS, ES)
Detected AS Path 4270 3549 3356 12956
Detected by number of BGPMon peers: 69

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