That particular era of equipment is still quite prominent in telecom central office environments, and I know of several telcom nms solutions that use PostgreSQL. However having said that it's of little likelyhood that those are being updated to use newer versions of postgres or even wether or not they receive security/bugfixes....
Sent on the go, from somewhere other than here.
-------- Original message --------
From: Dave Page <dpage@pgadmin.org>
Date: 2018-08-30 05:32 (GMT-06:00)
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>, buildfarm-members@postgresql.org
Subject: Re: many animals are running old clients