Possible BGP hijack

Beginning at 2023-07-19 18:03:36 UTC, we detected a possible BGP hijack.

Prefix 31.135.208.0/21, is normally announced by AS57016 ISTV-AS, UZ.

But beginning at 2023-07-19 18:03:36, the same prefix (31.135.208.0/21) was also announced by ASN 56040.

This was detected by 2 BGPMon peers.

Expected
Start time: 2023-07-19 18:03:36 UTC
Expected prefix: 31.135.208.0/21
Expected ASN: 57016 (ISTV-AS, UZ)
Event Details
Detected advertisement: 31.135.208.0/21
Detected Origin ASN 56040 (CMNET-GUANGDONG-AP China Mobile communications corporation, CN)
Detected AS Path 209218 20473 3491 58453 9808 56040
Detected by number of BGPMon peers: 2

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