Possible BGP hijack

Beginning at 2019-07-31 16:21:55, we detected a possible BGP hijack.

Prefix 172.0.0.0/12, Normally announced by AS7018 ATT-INTERNET4 - AT&T Services, Inc., US

Starting at 2019-07-31 16:21:55, a more specific route (172.10.10.0/24) was announced by ASN 19429.

This was detected by 4 BGPMon peers.

Expected
Start time: 2019-07-31 16:21:55 UTC
Expected prefix: 172.0.0.0/12
Expected ASN: 7018 (ATT-INTERNET4 - AT&T Services, Inc., US)
Event Details
Detected advertisement: 172.10.10.0/24
Detected Origin ASN 19429 (ETB - Colombia, CO)
Detected AS Path 53235 53237 52320 27951 19429
Detected by number of BGPMon peers: 4

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