Possible BGP hijack

Beginning at 2022-04-26 08:24:51 UTC, we detected a possible BGP hijack.

Prefix 146.109.153.0/24, is normally announced by AS9042 SIX Zuerich, Switzerland, CH.

But beginning at 2022-04-26 08:24:51, the same prefix (146.109.153.0/24) was also announced by ASN 20743.

This was detected by 13 BGPMon peers.

Expected
Start time: 2022-04-26 08:24:51 UTC
Expected prefix: 146.109.153.0/24
Expected ASN: 9042 (SIX Zuerich, Switzerland, CH)
Event Details
Detected advertisement: 146.109.153.0/24
Detected Origin ASN 20743 (Unknown)
Detected AS Path 14613 6939 6730 20743
Detected by number of BGPMon peers: 13

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