Possible BGP hijack

Beginning at 2023-05-31 18:55:21 UTC, we detected a possible BGP hijack.

Prefix 63.161.28.0/24, is normally announced by AS3507 Unknown.

But beginning at 2023-05-31 18:55:21, the same prefix (63.161.28.0/24) was also announced by ASN 210907.

This was detected by 49 BGPMon peers.

Expected
Start time: 2023-05-31 18:55:21 UTC
Expected prefix: 63.161.28.0/24
Expected ASN: 3507 (Unknown)
Event Details
Detected advertisement: 63.161.28.0/24
Detected Origin ASN 210907 (DELTAIP-AS, NL)
Detected AS Path 63956 3491 1299 34465 213035 210907
Detected by number of BGPMon peers: 49

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