At $lastjob, we had 60k subs using a pair of BSD boxes running a pretty simple BIND instance with no issues. We used frr to advertise a vip for customers to query against, but otherwise it was a pretty simple install/config.
On Aug 7, 2025, at 19:45, DurgaPrasad - DatasoftComnet via NANOG <nanog@lists.nanog.org> wrote:
Hello all, Do you have any recommendations for recursive DNS servers for a medium sized (20-30k users) ISP. We have used powerdns and unbound but sometimes find the caching times a bit on upper side. Any suggestions between these two or anything new? Also need points on how much we tune the settings pros and cons if any.
Thank you /DP _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/SUTKDISS...