Possible BGP hijack

Beginning at 2019-08-07 09:24:55, we detected a possible BGP hijack.

Prefix 203.20.136.0/23, Normally announced by AS36678 CTUSA - CHINA TELECOM (AMERICAS) CORPORATION, US

Starting at 2019-08-07 09:24:55, a more specific route (203.20.137.0/24) was announced by ASN 131219.

This was detected by 4 BGPMon peers.

Expected
Start time: 2019-08-07 09:24:55 UTC
Expected prefix: 203.20.136.0/23
Expected ASN: 36678 (CTUSA - CHINA TELECOM (AMERICAS) CORPORATION, US)
Event Details
Detected advertisement: 203.20.137.0/24
Detected Origin ASN 131219 (ISPL-AS-AP Indosat Singapore Pte. Ltd., SG)
Detected AS Path 37989 56300 132132 4657 17922 131219
Detected by number of BGPMon peers: 4

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