47 lines
1.6 KiB
Markdown
47 lines
1.6 KiB
Markdown
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## SYNTAX04: The NS name must have a valid domain/hostname
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### Test case identifier
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**SYNTAX04** The NS name must have a valid domain/hostname
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### Objective
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The Name Server name must be a valid hostname according to the rules defined
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in [RFC 952](https://datatracker.ietf.org/doc/html/rfc952),
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in section 2.1 in [RFC 1123](https://datatracker.ietf.org/doc/html/rfc1123#section-2.1),
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section 11 in [RFC 2182](https://datatracker.ietf.org/doc/html/rfc2181#section-11) and
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section 2 and 5 in [RFC 3696](https://datatracker.ietf.org/doc/html/rfc3696#section-2).
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Newer RFCs may override some rules defined in earlier documents.
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### Inputs
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The hostname to be tested. The hostnames comes from all the nameservers
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used, from both the parent and the zone itself.
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### Ordered description of steps to be taken to execute the test case
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1. Obtain the list of name server hostnames from [Method2](../Methods.md) and
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[Method3](../Methods.md)
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(This is all the name servers from the parent delegation, and all the
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name servers in the apex of the zone itself.)
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2. Each label of the hostname of the test object is used as the input
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for the validation.
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3. If any label in the hostname does not contain a-z or 0-9 this test case
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fails.
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4. If the rightmost label (the TLD) contains only digits, this test case
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fails.
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5. If there is a hyphen ('-') in position 3 and 4 of the label, and the prefix
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is not xn (used for internationalization), this test case fails.
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### Outcome(s)
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If any of the steps 3 to 5 in the ordered description of this test case fails,
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the whole test case fails.
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### Special procedural requirements
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None.
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### Intercase dependencies
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None.
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