This incident has been resolved.
A fix has been implemented and we are monitoring the results.
DNSimple has identified the issue and things seem to be improving.
You can workaround this DNS issue if you own your own domain. Run `fly ips list` to see the IPs assigned to your app, then create an A record pointing to the IPv4 address, and an AAAA record pointed to the IPv6 address. Then `fly certs add `.
Name resolution is failing for fly.dev (and other DNSimple hosted domains).
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