[urn] Re: Registration request for AR URN Namespace

Hi Dale and Peter,

Thank you for the clarity, we only ever intent to set our extension to be made up if ALPHA, DIGIT, hyphen and dot and now I fully understand the issue with US 7 bit ASCII. So if I was to include what you have listed in your emails, would that be acceptable (I know that you have tilde I your list but I guess we can keep that in there for our application in case)?

Regards
Quoc


From: Peter Saint-Andre <[email protected]>
Sent: Monday, 26 January 2026 13:53
To: Dale R. Worley <[email protected]>; Quoc Pham <[email protected]>
Cc: [email protected]; Sharon Jonnalagadda <[email protected]>
Subject: Re: [urn] Re: Registration request for AR URN Namespace

On 1/25/26 7: 47 PM, Dale R. Worley wrote: > Looking at Appendix A of RFC 3986, I suspect that you want to allow the > extension to be one or more "unreserved" characters: > > unreserved = ALPHA / DIGIT / "-" / ". " / "_" / "~" Agreed. 
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On 1/25/26 7:47 PM, Dale R. Worley wrote:



> Looking at Appendix A of RFC 3986, I suspect that you want to allow the

> extension to be one or more "unreserved" characters:

>

>     unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"



Agreed.



Peter

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