Possible BGP hijack

Beginning at 2020-03-20 07:21:50, we detected a possible BGP hijack.

Prefix 83.49.0.0/16, Normally announced by AS3352 TELEFONICA_DE_ESPANA, ES

Starting at 2020-03-20 07:21:50, a more specific route (83.49.51.0/24) was announced by ASN 5617.

This was detected by 2 BGPMon peers.

Expected
Start time: 2020-03-20 07:21:50 UTC
Expected prefix: 83.49.0.0/16
Expected ASN: 3352 (TELEFONICA_DE_ESPANA, ES)
Event Details
Detected advertisement: 83.49.51.0/24
Detected Origin ASN 5617 (TPNET, PL)
Detected AS Path 38987 29535 5617
Detected by number of BGPMon peers: 2

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