They charge it even if you’re using your own address space.  It’s a fee simply for establishing BGP with them on a given circuit.  I believe if you used static routes and their space, you would not have to pay it.

From: NANOG <nanog-bounces@nanog.org> on behalf of Josh Luthman <josh@imaginenetworksllc.com>
Date: Wednesday, October 17, 2018 at 12:10 PM
To: Brielle Bruns <bruns@2mbit.com>
Cc: NANOG list <nanog@nanog.org>
Subject: Re: Cogent charging 50/mo for BGP (not IPs, the service)

I view Cogent IP space as a way to lock customers to their service, ie make them sticky.

Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373

On Wed, Oct 17, 2018, 12:03 PM Brielle Bruns <bruns@2mbit.com> wrote:

On 10/17/2018 9:47 AM, Josh Luthman wrote:
> Has anyone else dealt with this mess?  Even my Cogent rep admits it's
> unique to their business.

That sounds like the BS the first company I worked for tried to pull.

One would think they'd welcome customers bringing their own IP space
since it saves them money by not using up precious Cogent IPv4 address
space.

Hell, I even have BGP for v4 and v6 over my CenturyLink biz fiber, and
its available as part of the enhanced package they offer with no extra fees.


--
Brielle Bruns
The Summit Open Source Development Group
http://www.sosdg.org    /     http://www.ahbl.org