Possible BGP hijack

Beginning at 2022-12-06 14:04:09 UTC, we detected a possible BGP hijack.

Prefix 205.57.0.0/19, is normally announced by AS3475 DNIC-AS-03475, US.

But beginning at 2022-12-06 14:04:09, the same prefix (205.57.0.0/19) was also announced by ASN 5371.

This was detected by 62 BGPMon peers.

Expected
Start time: 2022-12-06 14:04:09 UTC
Expected prefix: 205.57.0.0/19
Expected ASN: 3475 (DNIC-AS-03475, US)
Event Details
Detected advertisement: 205.57.0.0/19
Detected Origin ASN 5371 (Unknown)
Detected AS Path 1126 3549 3356 209 721 27064 5371 5371 5371 5371
Detected by number of BGPMon peers: 62

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