Re: Sudden surge in CGNAT blacklisting

["Dobbins, Roland via NANOG" <nanog () lists nanog org>]

On May 16, 2025, at 08:27, Eric C. Miller <eric () ericheather com> wrote:

I haven't been able to find any data service showing the IPs as sources for abuse, just proxy/vpn.

A lot of abuse is reflected through such services, so they’re being flagged more aggressively, these days.

If in fact some of your customers are participating in residential proxy services, whether knowingly or not, your new 
allocation may well end up being flagged, too, FYI.

Hopefully, your AUP disallows reselling/sharing of service, and/or has a general clause allowing service termination at 
your discretion, should things come to that.

That being said, there’s a real need for proactive user education on the negatives of signing up for these services; 
and to the degree that time and resources allow, assistance for users in disentangling themselves from such 
arrangements.

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