Possible BGP hijack

Beginning at 2019-04-03 09:37:54 UTC, we detected a possible BGP hijack.

Prefix, is normally announced by AS131613 SHINCHENG-AS-TW Shin Cheng of Digital Co., Ltd., TW.

But beginning at 2019-04-03 09:37:54, the same prefix ( was also announced by ASN 21859.

This was detected by 62 BGPMon peers.

Start time: 2019-04-03 09:37:54 UTC
Expected prefix:
Expected ASN: 131613 (SHINCHENG-AS-TW Shin Cheng of Digital Co., Ltd., TW)
Event Details
Detected advertisement:
Detected Origin ASN 21859 (ZNET - Zenlayer Inc, US)
Detected AS Path 1103 3257 2914 21859
Detected by number of BGPMon peers: 62

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