Is there a site that tracks these outages and possibly lists the causes? Is the infrastructure under an attack?
[0] https://www.isitdownrightnow.com/namecheap.com.html
[1] https://downforeveryoneorjustme.com/namecheap.com
[2] https://www.namecheap.com/support/knowledgebase/article.aspx/229/5/how-can-i-find-out-about-any-maintenance-or-other-issues-related-to-your-services/
[3] https://statusgator.com/services/namecheap