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Creator here. I've done some testing myself with domains with hyphens, and it appears to be working for me. I did fix a limited edge case that may have caused issues.

Drop me an e-mail: mgall [at] cloudflare if you can reproduce and I can look again.

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Agreed with the parent, I tried to resolve a name in the format:

app.example-foo.com, and got a “no records found for foo.com” error.

It defaults to AAAA records so you may need to type

A app.example-foo.com

it worked for me

So in my case, I actually performed an explicit CNAME lookup. The fact that the error message says "We couldn't find any CNAME records for foo.com" tells me that the name parser is still not handling hyphens correctly.

Interesting, I'll take a look.

All about the future! A records are old school :)

See my addition above - this still seems to be broken.

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