Possible BGP hijack

Beginning at 2023-11-25 13:59:27 UTC, we detected a possible BGP hijack.

Prefix 103.189.128.0/24, is normally announced by AS8075 MICROSOFT-CORP-MSN-AS-BLOCK, US.

But beginning at 2023-11-25 13:59:27, the same prefix (103.189.128.0/24) was also announced by ASN 149864.

This was detected by 11 BGPMon peers.

Expected
Start time: 2023-11-25 13:59:27 UTC
Expected prefix: 103.189.128.0/24
Expected ASN: 8075 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
Event Details
Detected advertisement: 103.189.128.0/24
Detected Origin ASN 149864 ()
Detected AS Path 59919 5398 3303 6939 1299 174 149864
Detected by number of BGPMon peers: 11

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