Two weeks ago I wrote that dnswl.org has more than 5’000 users. Well, that’s a thing of the past. As of today, August 4th 2007, there are more than 12’000 users of dnswl.org (see the original article on the caveats with such numbers).

The increase is “bumpy”, indicating lower useage on weekends (parallel with the lower email traffic usually seen outside working days).
This page shows the charts and numbers for three of the nameservers for the list.dnswl.org zone. Assuming that all nameservers have roughly equal traffic patterns, the current rate of queries to dnswl.org nameservers is roughly 250’000 queries per minute (based not on peak, but on 30-minute average traffic); of these, roughly 10’000 queries per minute are for an entry listed in our database.
The 250k/10k are only queries that reach our nameservers. Due to the caching inherent in DNS, the actual number of e-mails being “checked” by dnswl.org is much higher (but nobody will be able to tell how much higher).