Cogent v6 Blackhole server issues???

Dennis Burgess dmburgess at
Fri Feb 22 18:18:02 UTC 2019

Out of St. Louis, mine has been up since the last reboot of my router.  

2001:550:0:1000::421c:802 is my peering..  

Dennis Burgess, Mikrotik Certified Trainer 
Author of "Learn RouterOS- Second Edition” 
Link Technologies, Inc -- Mikrotik & WISP Support Services 
Office: 314-735-0270  Website: 
Create Wireless Coverage’s with 

-----Original Message-----
From: NANOG <nanog-bounces at> On Behalf Of John Von Essen
Sent: Friday, February 22, 2019 12:15 PM
To: nanog at
Subject: Cogent v6 Blackhole server issues???

2 days ago my IPv6 BGP session to Cogent's Blackhole server went down (2001:550:0:1000::421C:802), I've spent all morning emailing their NOC and I'm getting nowhere. Anyone else seeing this? Im in the Phila Metro area.


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