Carrier classification

Mike Hammett nanog at
Sat May 13 15:56:28 UTC 2017

This debate has spilled onto NANOG from Facebook now... 

My point is that while the term tier-1 (meaning no transit) isn't wrong, that the whole system is now irrelevant. Look at the Wikipedia list of "Tier 1" networks and then look at CAIDA, Dyn, QRator, HE's BGP Report, etc. There's some overlap between the historical "tier 1s" and the other rankings of usefulness, but the "tier 1s" are no longer the dominate networks they once were. 

Mike Hammett 
Intelligent Computing Solutions 


----- Original Message -----

From: "Matt Hoppes" <mattlists at> 
To: nanog at 
Sent: Saturday, May 13, 2017 10:44:14 AM 
Subject: Carrier classification 

Are the terms tier-1,2,3 dead terms or still valid ways to define carriers? 

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