Possible BGP hijack

Beginning at 2019-11-18 11:03:09 UTC, we detected a possible BGP hijack.

Prefix 217.156.113.0/24, is normally announced by AS20530 ANISP-ROMANIA, RO.

But beginning at 2019-11-18 11:03:09, the same prefix (217.156.113.0/24) was also announced by ASN 57344.

This was detected by 152 BGPMon peers.

Expected
Start time: 2019-11-18 11:03:09 UTC
Expected prefix: 217.156.113.0/24
Expected ASN: 20530 (ANISP-ROMANIA, RO)
Event Details
Detected advertisement: 217.156.113.0/24
Detected Origin ASN 57344 (TELEHOUSE-AS, BG)
Detected AS Path 131477 57695 3223 1299 1273 57344
Detected by number of BGPMon peers: 152

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