RFC2606 is probably what you want. https://tools.ietf.org/html/rfc2606#page-2 …
As far as I can tell, there's no equivalent of an rfc1918 for DNS TLDs. If that's the case, how widely known is this?
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OK, yeah, I had seen that one. But it wasn't clear whether
@ICANN was bound by those restrictions. - 4 more replies
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The rfc2606 domains would work, right? (Pretty egregious hack, though…)
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