Possible BGP hijack

Beginning at 2018-10-29 14:32:31 UTC, we detected a possible BGP hijack.

Prefix 23.209.42.0/24, is normally announced by AS9605 DOCOMO NTT DOCOMO, INC., JP.

But beginning at 2018-10-29 14:32:31, the same prefix (23.209.42.0/24) was also announced by ASN 9498.

This was detected by 40 BGPMon peers.

Expected
Start time: 2018-10-29 14:32:31 UTC
Expected prefix: 23.209.42.0/24
Expected ASN: 9605 (DOCOMO NTT DOCOMO, INC., JP)
Event Details
Detected advertisement: 23.209.42.0/24
Detected Origin ASN 9498 (BBIL-AP BHARTI Airtel Ltd., IN)
Detected AS Path 2711 1299 9498
Detected by number of BGPMon peers: 40

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