Possible BGP hijack

Beginning at 2021-12-28 11:24:41, we detected a possible BGP hijack.

Prefix 209.27.64.0/18, Normally announced by AS3561 CENTURYLINK-LEGACY-SAVVIS, US

Starting at 2021-12-28 11:24:41, a more specific route (209.27.64.0/24) was announced by ASN 3855.

This was detected by 111 BGPMon peers.

Expected
Start time: 2021-12-28 11:24:41 UTC
Expected prefix: 209.27.64.0/18
Expected ASN: 3561 (CENTURYLINK-LEGACY-SAVVIS, US)
Event Details
Detected advertisement: 209.27.64.0/24
Detected Origin ASN 3855 (LOGIC-3855, BM)
Detected AS Path 53432 7018 701 1321 3855
Detected by number of BGPMon peers: 111

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