As BitMEX scales, it is now necessary for us to spread ingress endpoints.
We will be migrating the primary public ingress point from its current network-routed 52.214.218.140 to a dynamic setup that will serve a larger number of ingress IPs based on load. This action is in response to recent DDoS activity and is part of a larger scaling effort. The new endpoints have begun serving a small percentage of traffic, which we will increase through the week.
This action should not affect the vast majority of API consumers. As with all web services, we strongly discourage hardcoding IP addresses. Please ensure your tools do not cache DNS records for an unreasonably long time.