Possible BGP hijack

Beginning at 2021-12-03 19:50:05, we detected a possible BGP hijack.

Prefix 172.217.0.0/16, Normally announced by AS15169 GOOGLE, US

Starting at 2021-12-03 19:50:05, a more specific route (172.217.173.0/24) was announced by ASN 26619.

This was detected by 52 BGPMon peers.

Expected
Start time: 2021-12-03 19:50:05 UTC
Expected prefix: 172.217.0.0/16
Expected ASN: 15169 (GOOGLE, US)
Event Details
Detected advertisement: 172.217.173.0/24
Detected Origin ASN 26619 (GTD COLOMBIA S.A.S, CO)
Detected AS Path 38987 5617 5511 52468 18747 18747 18747 18747 18747 26619
Detected by number of BGPMon peers: 52

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