Possible BGP hijack

Beginning at 2022-08-05 19:25:17, we detected a possible BGP hijack.

Prefix 100.112.0.0/16, Normally announced by AS30793 ISTS-, PL

Starting at 2022-08-05 19:25:17, a more specific route (100.112.100.0/22) was announced by ASN 28573.

This was detected by 5 BGPMon peers.

Expected
Start time: 2022-08-05 19:25:17 UTC
Expected prefix: 100.112.0.0/16
Expected ASN: 30793 (ISTS-, PL)
Event Details
Detected advertisement: 100.112.100.0/22
Detected Origin ASN 28573 (CLARO S.A., BR)
Detected AS Path 63956 6762 4230 28573
Detected by number of BGPMon peers: 5

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