CenturyLink customers received an unwelcome post-Christmas surprise when their service went down Dec. 27 and stayed down through Dec. 28.

The lengthy outage resulted in everything from minor inconvenience for online shoppers, to restaurants and other businesses having to operate without internet, and spotty 911 service that created anxiety for those in need of help. Even Verizon was impacted. However, the outage reportedly didn’t result in any life-threatening incidents.

Still, federal and state officials want answers. The Federal Communications Commission (FCC) has launched an investigation and various states are looking into how their residents were impacted.

What remains to be seen is whether CenturyLink will face any repercussions for the outage.

Scroll through our timeline below to see how it all unfolded, as well as the aftermath that remains unsettled.