Possible BGP hijack

Beginning at 2023-03-01 21:05:52 UTC, we detected a possible BGP hijack.

Prefix 2001:1248:5500::/42, is normally announced by AS11172 Alestra, S. de R.L. de C.V., MX.

But beginning at 2023-03-01 21:05:52, the same prefix (2001:1248:5500::/42) was also announced by ASN 269000.

This was detected by 9 BGPMon peers.

Start time: 2023-03-01 21:05:52 UTC
Expected prefix: 2001:1248:5500::/42
Expected ASN: 11172 (Alestra, S. de R.L. de C.V., MX)
Event Details
Detected advertisement: 2001:1248:5500::/42
Detected Origin ASN 269000 (JG TELECOM COM. E SERVS. LTDA, BR)
Detected AS Path 20205 6939 6762 26615 52695 269000
Detected by number of BGPMon peers: 9

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