Possible BGP hijack

Beginning at 2020-11-28 21:18:41 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS47340 ROCHE-AS, DE.

But beginning at 2020-11-28 21:18:41, the same prefix ( was also announced by ASN 203.

This was detected by 124 BGPMon peers.

Start time: 2020-11-28 21:18:41 UTC
Expected prefix:
Expected ASN: 47340 (ROCHE-AS, DE)
Event Details
Detected advertisement:
Detected Origin ASN 203 (CENTURYLINK-LEGACY-LVLT-203, US)
Detected AS Path 133326 7545 3356 203
Detected by number of BGPMon peers: 124

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