At approximately 6:30 PM we were alerted to an outage affecting the S1 server. Upon investigation we found the server to be online and operational although it didn't appear to be receiving very many requests from the internet.
Upon investigation we determined that there were networking issues affecting one of our transit providers - Zayo.
Thankfully this didn't affect everybody - only those whose traffic naturally traversed Zayo's network to or from us. Now that we've removed this providers from our bandwidth mix all traffic is now flowing over our other transit providers and there are no more outages or issues.
If Zayo provides an official RFO [Reason for Outage] we'll make it available here.
It's worth noting that all of our servers and networking equipment were online and operational without issue during this entire incident. The issue was outside of our network border and we had to engage our networking team at the facility to remove the failing transit providers from our bandwidth mix.
If you have any questions or concerns do please let us know.