RE: Buying IPs with poor reputation

[Brian Turnbow via NANOG <nanog () nanog org>]

Hi,

Our experience has been that most blacklist operators/owners  are more than willing to remove IPs after a change of 
ownership, same with updating of geo IP services.
The bigger problem for us has been the huge number of statically defined or never updated blacklists/geo blocking by 
webmasters/postmasters/firewall admins that take months to get straightened out.
This is what makes the difference in price well worth getting reputable IPs and avoiding countries that may be 
considered as potentially unsafe.


Brian


From: NANOG <nanog-bounces+b.turnbow=twt.it () nanog org> On Behalf Of David Guo via NANOG
Sent: Wednesday, May 19, 2021 10:24 AM
To: Ross Tajvar <ross () tajvar io>; North American Network Operators' Group <nanog () nanog org>
Subject: Re: Buying IPs with poor reputation

Let's say normal IPs are $35, those blocked IPs may be $32, and you'll need much work to delist from all database.

xTom GmbH
________________________________
From: NANOG <nanog-bounces+david=xtom.com () nanog org<mailto:nanog-bounces+david=xtom.com () nanog org>> on behalf of 
Ross Tajvar <ross () tajvar io<mailto:ross () tajvar io>>
Sent: Wednesday, May 19, 2021 4:20:14 PM
To: North American Network Operators' Group <nanog () nanog org<mailto:nanog () nanog org>>
Subject: Buying IPs with poor reputation

I'm curious if anyone has experience deliberately buying blacklisted blocks, or blocks that otherwise have poor 
reputation. Is there a significant price difference? How do you seek them out? Most of the sellers I've found seem to 
focus on blocks with good reputation, or on improving the reputation of a bad block. But I am interested in purchasing 
some IPs for internal services where reputation doesn't really matter.

Thanks,
Ross