Possible BGP hijack

Beginning at 2021-01-21 12:21:54, we detected a possible BGP hijack.

Prefix 156.154.70.0/24, Normally announced by AS19905 NEUSTAR-AS6, US

Starting at 2021-01-21 12:21:54, a more specific route (156.154.70.25/32) was announced by ASN 12741.

This was detected by 3 BGPMon peers.

Expected
Start time: 2021-01-21 12:21:54 UTC
Expected prefix: 156.154.70.0/24
Expected ASN: 19905 (NEUSTAR-AS6, US)
Event Details
Detected advertisement: 156.154.70.25/32
Detected Origin ASN 12741 (AS-NETIA Warszawa 02-822, PL)
Detected AS Path 203086 12741
Detected by number of BGPMon peers: 3

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