http://forum.bytemark.co.uk/category/outage-notifications - every single one of Bytemark's outages since June 2004. It's a great sales tool, at least when someone asks "so how reliable are you?". I a few using statuspage.io but without having an entire network map & customer list uploaded (so it knows who to notify), it's not going to be better, and I'm not sure it's geared to presenting historical outage data.
I'm hoping to finally build a tool this year incorporating some network monitoring (i.e. "unconfirmed reports") and a copy of all our internal rack/network database, so that we get to the holy grail: 1) customers get notified by email/SMS of stuff that definitely affects them, 2) it's easy for an engineer (or the whole team) to write notes on outages as they happen, and have them presented in a way that doesn't confuse customers.
I'm hoping to finally build a tool this year incorporating some network monitoring (i.e. "unconfirmed reports") and a copy of all our internal rack/network database, so that we get to the holy grail: 1) customers get notified by email/SMS of stuff that definitely affects them, 2) it's easy for an engineer (or the whole team) to write notes on outages as they happen, and have them presented in a way that doesn't confuse customers.