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Title |
Test
Details
Pattern Title
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Expression |
(?=^.{1,254}$)(^(?:(?!\d+\.)[a-zA-Z0-9_\-]{1,63}\.?)+(?:[a-zA-Z]{2,})$)
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Description |
Validates MS FQDNs. 1) Entire fqdn less than 255 chars. 2) Host and domain names may contain an underscore. 3) 1st char can be a number. 4) No part can be all numbers. 5) Allows any TLD
Works in C#. Based on Remi Sabourin's regex
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Matches |
host.domain.com | _host.domain.com | 1host-2._ldap.domain.com
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Non-Matches |
33.domain.com | host..com | this_really_long._fully_qualified_domain_name._contains_257_characters_w
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Author |
Rating:
Not yet rated.
Scott Mulcahy
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Title |
Test
Details
Pattern Title
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Expression |
(?=^.{1,254}$)(^(?:[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]\.?)+(?:[a-zA-Z]{2,})$)
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Description |
Based on Remi Sabourin pattern. Adds total length validation. Like Remi's this allows a part to be all numbers. To prevent all numbers just add (?!\d+\.) between (^(?: and ([a-z-A-Z0-9]
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Matches |
host.domain-name.com | 33.domain.com | 3-3.domain.com
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Non-Matches |
_host.domain.com | [host].domain.com | host.domain.33
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Author |
Rating:
Not yet rated.
Scott Mulcahy
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