Possible BGP hijack

Beginning at 2023-02-21 07:15:56 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS64021 NETWORK-TRANSIT Network-Transit, CN.

But beginning at 2023-02-21 07:15:56, the same prefix ( was also announced by ASN 16637.

This was detected by 66 BGPMon peers.

Start time: 2023-02-21 07:15:56 UTC
Expected prefix:
Expected ASN: 64021 (NETWORK-TRANSIT Network-Transit, CN)
Event Details
Detected advertisement:
Detected Origin ASN 16637 (MTNNS-AS, ZA)
Detected AS Path 263287 263396 263321 61568 37468 16637
Detected by number of BGPMon peers: 66

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