Possible BGP hijack

Beginning at 2023-09-22 09:03:58, we detected a possible BGP hijack.

Prefix 2001:253::/32, Normally announced by AS4538 ERX-CERNET-BKB China Education and Research Network Center, CN

Starting at 2023-09-22 09:03:58, a more specific route (2001:253:113::/48) was announced by ASN 142079.

This was detected by 19 BGPMon peers.

Expected
Start time: 2023-09-22 09:03:58 UTC
Expected prefix: 2001:253::/32
Expected ASN: 4538 (ERX-CERNET-BKB China Education and Research Network Center, CN)
Event Details
Detected advertisement: 2001:253:113::/48
Detected Origin ASN 142079 ()
Detected AS Path 20205 6939 23911 38255 38272 142079
Detected by number of BGPMon peers: 19

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