Possible BGP hijack

Beginning at 2023-07-31 05:41:52, we detected a possible BGP hijack.

Prefix 77.56.0.0/15, Normally announced by AS6830 LIBERTYGLOBAL Liberty Global formerly UPC Broadband Holding, aka AORTA, NL

Starting at 2023-07-31 05:41:52, a more specific route (77.56.48.0/21) was announced by ASN 14618.

This was detected by 6 BGPMon peers.

Expected
Start time: 2023-07-31 05:41:52 UTC
Expected prefix: 77.56.0.0/15
Expected ASN: 6830 (LIBERTYGLOBAL Liberty Global formerly UPC Broadband Holding, aka AORTA, NL)
Event Details
Detected advertisement: 77.56.48.0/21
Detected Origin ASN 14618 (AMAZON-AES, US)
Detected AS Path 28300 14840 1031 16509 14618
Detected by number of BGPMon peers: 6

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