My DB covers from https://hacker-news.firebaseio.com/v0/item/1.json?print=pret... (10/09/2006 at 6:21pm UTC) to https://hacker-news.firebaseio.com/v0/item/14372035.json?pri... (05/18/2017 at 11:58pm UTC)
The dump posted claims to cover from 1 to 14566367 (06/16/2017 at 3:03am UTC)