The outage seems to be reported as fix about 16:00 EST yesterday.
It seems Verizon was responsible for the outage due to a widespread BGP routing leak. This affected a number of Internet services and a portion of their traffic.
BGP acts as the backbone of the Internet, routing traffic through Internet transit providers and then to services. There are more than 700k routes across the Internet. By nature, route leaks are localized and can be caused by error or through malicious intent.
Thank you for your patience in this matter.
Update 06/24/2019 13:52 PM 27 days
It has been brought to our attention that several popular sites like Google, Amazon, Reddit, and Spectrum — just to name a few — are experiencing issues this morning. Those issues appear to have begun around 6 or 7 AM ET.
Problems appear to be clearing up as of 8:40 AM, it's likely going to take some time before everything is running smoothly again. Reports are still going up on DownDetector as of writing.
We will continue to monitor the situation as it develops.
Thank you for you patience in this matter.