I was called out by our PRTG monitoring system c20:00 BST and after seeing the increase in 403 errors coinciding with the failure and the details logs stated access with my account was being attempted from unauthorised addresses, raised a Meraki case .. Is this this an IoC ? While holding, did my own checks and having seen the sources were cloudflare began to suspect technical error not mal-intent. Traceroute during the issue to api.meraki.com gave just 3 hops, the same as traceroute to one the 'my' bogus addresses. I was about to also raise with my ISP in case they knew of an global issue with Cloudflare when Meraki support came back and confirmed 1 Api.meraki.com has been moved to cloudflare earlier today.. and that other meraki users were reporting the issue and provided me your community thread... I think it was also stated that cloudflare were incorrectly source NAT'ing customer calls en route to api.meraki.com .. which to me seems to explain all the symptoms .. And then the issue apparently cleared   Thank you for posting, lets hope for a peaceful rest of the evening. ... View more