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Companies using public IP space owned by others for internal routing

Subject: Companies using public IP space owned by others for internal routing
From: egon at egon.cc (James Downs)
Date: Sun, 17 Dec 2017 14:57:28 -0800
In-reply-to: <[email protected]>
References: <BLUPR15MB018000FE34FB7E8B8ECBBF93C8090@BLUPR15MB0180.namprd15.prod.outlook.com> <[email protected]>

> On Dec 17, 2017, at 14:33, Matt Hoppes <mattlists at rivervalleyinternet.net> wrote:
> 
> Had a previous employee or I discovered it on the network segment after we had some weird routing issues and had to get that cleaned up. I don't know why anyone would do that when there is tons of private IP space.

Unless there isn't.. I've worked at more than one company that had used up all the private space. Then you have the cases where some M&A causes overlapping IP space. In addition, you'd also be surprised how many people just assign the entire 10/8 space into a flat IP space.

-j

Follow-Ups:
- Companies using public IP space owned by others for internal routing
  - From: chk at pobox.com (Harald Koch)
- Companies using public IP space owned by others for internal routing
  - From: large.hadron.collider at gmx.com (Large Hadron Collider)

References:
- Companies using public IP space owned by others for internal routing
  - From: rwebb at ropeguru.com (Robert Webb)
- Companies using public IP space owned by others for internal routing
  - From: mattlists at rivervalleyinternet.net (Matt Hoppes)

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