Why is `to.` a valid domain name?

Posted by Beau Martínez on Stack Overflow See other posts from Stack Overflow or by Beau Martínez
Published on 2010-04-21T15:08:30Z Indexed on 2010/04/21 15:13 UTC
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dns

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networking

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internet

In visiting http://to./ you are given a legitimate website.

Is to. a valid domain name then, despite not ending with a TLD and having a superfluous period? Why?

Being valid, what would its DNS hierarchy be?

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