Possible BGP hijack

Beginning at 2023-08-29 00:37:44, we detected a possible BGP hijack.

Prefix 2001:1248:3300::/42, Normally announced by AS11172 Alestra, S. de R.L. de C.V., MX

Starting at 2023-08-29 00:37:44, a more specific route (2001:1248:3329::/48) was announced by ASN 266970.

This was detected by 7 BGPMon peers.

Expected
Start time: 2023-08-29 00:37:44 UTC
Expected prefix: 2001:1248:3300::/42
Expected ASN: 11172 (Alestra, S. de R.L. de C.V., MX)
Event Details
Detected advertisement: 2001:1248:3329::/48
Detected Origin ASN 266970 ()
Detected AS Path 20205 6939 6461 52320 52320 52320 7738 7738 4230 61678 266970
Detected by number of BGPMon peers: 7

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