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Editorial Team
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Asked: 2026-05-17T23:05:56+00:00

I need to store the machine name in a database field, so I need

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I need to store the machine name in a database field, so I need to know how big to make the field.

So is there a limit on the length of a machine name?

If so what is the limit?

Can I machine name be Unicode?

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1 Answer

  1. Editorial Team

    This KB article says 255 bytes for the FQDN and it does support Unicode.

    http://support.microsoft.com/kb/909264

    DNS domain names

    The maximum length of the host name
    and of the fully qualified domain name
    (FQDN) is 63 octets per label and 255
    bytes per FQDN. This maximum includes
    254 bytes for the FQDN and one byte
    for the ending dot.

    In Windows 2000 and in Windows Server
    2003, the maximum host name and the
    FQDN use the standard length
    limitations that are mentioned
    earlier, with the addition of UTF-8
    (Unicode) support. Because some UTF-8
    characters exceed one octet in length,
    you cannot determine the size by
    counting the characters.

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