looking for hostname router identifier validation

• Subject: looking for hostname router identifier validation
• From: bryan at shout.net (Bryan Holloway)
• Date: Mon, 29 Apr 2019 16:16:06 -0500
• In-reply-to: <CA[email protected]>
• References: <[email protected]> <CA[email protected]>

On 4/29/19 3:13 PM, Eric Kuhnke wrote:
> I would caution against putting much faith in the validity of 
> geolocation or site ID by reverse DNS PTR records. There are a vast 
> number of unmaintained, ancient, stale, erroneous or wildly wrong PTR 
> records out there. I can name at least a half dozen ISPs that have 
> absorbed other ASes, some of those which also acquired other ASes 
> earlier in their history, forming a turducken of obsolete PTR records 
> that has things with ISP domain names last in use in the year 2002.

I still see references to UUNet in some reverse PTRs.

So, uh, yeah.

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