Possible BGP hijack

Beginning at 2023-09-04 12:44:09 UTC, we detected a possible BGP hijack.

Prefix 154.57.176.0/24, is normally announced by AS135175 FACTS-AS-IN Facts Online Pvt Ltd, IN.

But beginning at 2023-09-04 12:44:09, the same prefix (154.57.176.0/24) was also announced by ASN 49981.

This was detected by 52 BGPMon peers.

Expected
Start time: 2023-09-04 12:44:09 UTC
Expected prefix: 154.57.176.0/24
Expected ASN: 135175 (FACTS-AS-IN Facts Online Pvt Ltd, IN)
Event Details
Detected advertisement: 154.57.176.0/24
Detected Origin ASN 49981 (WORLDSTREAM, NL)
Detected AS Path 15557 49981
Detected by number of BGPMon peers: 52

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