Possible BGP hijack

Beginning at 2020-01-09 10:05:38 UTC, we detected a possible BGP hijack.

Prefix 154.16.73.0/24, is normally announced by AS200859 SPSBUILDING, BG.

But beginning at 2020-01-09 10:05:38, the same prefix (154.16.73.0/24) was also announced by ASN 42555.

This was detected by 139 BGPMon peers.

Expected
Start time: 2020-01-09 10:05:38 UTC
Expected prefix: 154.16.73.0/24
Expected ASN: 200859 (SPSBUILDING, BG)
Event Details
Detected advertisement: 154.16.73.0/24
Detected Origin ASN 42555 (OPTIC-COM-EU, BG)
Detected AS Path 263287 61568 18881 12956 2914 42555 42555
Detected by number of BGPMon peers: 139

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