nanog mailing list archives
Re: looking for hostname router identifier validation
From: Bryan Holloway <bryan () shout net>
Date: Mon, 29 Apr 2019 16:16:06 -0500
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.
Current thread:
- looking for hostname router identifier validation Matthew Luckie (Apr 29)
- Re: looking for hostname router identifier validation Eric Kuhnke (Apr 29)
- Re: looking for hostname router identifier validation Bryan Holloway (Apr 29)
- Re: looking for hostname router identifier validation Paul Ebersman (Apr 29)
- Re: looking for hostname router identifier validation Valdis Klētnieks (Apr 29)
- Re: looking for hostname router identifier validation Chris Adams (Apr 29)
- Re: looking for hostname router identifier validation Large Hadron Collider (Apr 29)
- Re: looking for hostname router identifier validation Julien Goodwin (Apr 30)
- Re: looking for hostname router identifier validation Bryan Holloway (Apr 30)
- Re: looking for hostname router identifier validation Large Hadron Collider (Apr 30)
- Re: looking for hostname router identifier validation Bryan Holloway (Apr 29)
- Re: looking for hostname router identifier validation Eric Kuhnke (Apr 29)
- Re: looking for hostname router identifier validation Bryan Holloway (Apr 30)