Possible BGP hijack

Beginning at 2020-03-04 16:58:38, we detected a possible BGP hijack.

Prefix 31.47.80.0/21, Normally announced by AS57154 SWKN Stadtwerke Konstanz GmbH, DE

Starting at 2020-03-04 16:58:38, a more specific route (31.47.84.0/24) was announced by ASN 55002.

This was detected by 159 BGPMon peers.

Expected
Start time: 2020-03-04 16:58:38 UTC
Expected prefix: 31.47.80.0/21
Expected ASN: 57154 (SWKN Stadtwerke Konstanz GmbH, DE)
Event Details
Detected advertisement: 31.47.84.0/24
Detected Origin ASN 55002 (DEFENSE-NET, US)
Detected AS Path 29430 8220 6453 55002
Detected by number of BGPMon peers: 159

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