looking for hostname router identifier validation

Mon Apr 29 21:16:06 UTC 2019

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.