Possible BGP hijack

Beginning at 2018-11-17 20:51:02, we detected a possible BGP hijack.

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

Starting at 2018-11-17 20:51:02, a more specific route ( was announced by ASN 36423.

This was detected by 200 BGPMon peers.

Start time: 2018-11-17 20:51:02 UTC
Expected prefix:
Expected ASN: 7018 (ATT-INTERNET4 - AT&T Services, Inc., US)
Event Details
Detected advertisement:
Detected Origin ASN 36423 (SAN-JUAN-CABLE - San Juan Cable, LLC, PR)
Detected AS Path 34279 6830 23520 36423
Detected by number of BGPMon peers: 200

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