Possible BGP hijack

Beginning at 2020-11-29 09:49:42 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS42718 STUPA, NL.

But beginning at 2020-11-29 09:49:42, the same prefix ( was also announced by ASN 42156.

This was detected by 71 BGPMon peers.

Start time: 2020-11-29 09:49:42 UTC
Expected prefix:
Expected ASN: 42718 (STUPA, NL)
Event Details
Detected advertisement:
Detected Origin ASN 42156 (GNX, NL)
Detected AS Path 61102 8551 50673 42156
Detected by number of BGPMon peers: 71

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