Hi there,
I realize it’s popular to jump straight to the “bad servers” conclusion, although the reality is that issues can exist at many different points that would affect this.
A good start would be the information and troubleshooting steps from this article: Overwatch - Latency Problems.
Past that you can find a lot more detail in this sticky post.
If you still believe it to be a more widespread issue, please do include the diagnostics described there, as well as some more info about your connection, including your country/city, ISP and a time frame for the problem.