#36452: DomainNameValidator forbids digits in TLDs
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Reporter: Shai Berger | Owner: (none)
Type: Bug | Status: closed
Component: Core (Other) | Version: dev
Severity: Normal | Resolution: invalid
Keywords: validation domain | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 1 | UI/UX: 0
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Changes (by Mike Edmunds):
* resolution: needsinfo => invalid
Comment:
Replying to [comment:2 Sarah Boyce]:
> Before we continue, I think we should get confirmation that tlds like
`com1` are valid
I believe `com1` is [https://stackoverflow.com/questions/9071279/number-
in-the-top-level-
domain/53875771#53875771:~:text=Specially%20note%20the%3A%20The%20ASCII%20label%20must%20consist%20entirely%20of%20letters%20(alphabetic%20characters%20a%2Dz)
not a valid TLD] under current ICANN rules. Since ICANN decides what's a
valid gTLD, their policies override whatever RFC 1035 may seem to allow.
There's a pretty thorough review here:
https://stackoverflow.com/questions/9071279/number-in-the-top-level-
domain/53875771.
That said, I haven't personally reviewed RFC 1035 and all 29(!) RFCs that
modify it. The ICANN gTLD policies are from 2012; there's a new gTLD
policy in draft form now, and I haven't reviewed that either. So if
someone finds a newer policy that would allow digits in TLDs—or better
yet, real-world evidence of a (non-IDNA) TLD containing digits—then we
should revisit this.
The exception, as Sarah noted, is an IDNA-encoded TLD starting with
`xn--`. ICANN allows those, and so does Django's DomainNameValidator.
(Also, I suppose there could be ''internal-use-only'' TLDs containing
digits, which ''might'' be valid under the RFCs but wouldn't be usable on
the public Internet. That seems pretty niche, and anyone having that use
case could subclass Django's DomainNameValidator to cover it.)
--
Ticket URL: <https://code.djangoproject.com/ticket/36452#comment:3>
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