Possible BGP hijack

Beginning at 2019-02-05 15:26:46, we detected a possible BGP hijack.

Prefix 46.249.64.0/19, Normally announced by AS43561 NET1-AS, BG

Starting at 2019-02-05 15:26:46, a more specific route (46.249.64.0/20) was announced by ASN 31133.

This was detected by 187 BGPMon peers.

Expected
Start time: 2019-02-05 15:26:46 UTC
Expected prefix: 46.249.64.0/19
Expected ASN: 43561 (NET1-AS, BG)
Event Details
Detected advertisement: 46.249.64.0/20
Detected Origin ASN 31133 (MF-MGSM-AS PJSC MegaFon, RU)
Detected AS Path 18356 9931 4651 31133
Detected by number of BGPMon peers: 187

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