Embedding Non-printable Characters in LMHOSTS Computer Names

 Last reviewed: April 4, 1997
Article ID: Q104576

The information in this article applies to:
  • Microsoft Windows NT operating system version 3.1
  • Microsoft Windows NT Advanced Server version 3.1
  • Microsoft Windows NT Server version 4.0
  • Microsoft Windows NT Workstation version 4.0

Under Windows NT, the LMHOSTS file enables you to specify names containing non-printable or extended characters. Custom applications that make use of special names to function properly in routed topologies may benefit from this feature.

To use this feature, you can specify non-printable characters by using their hexidecimal notations and surrounding the entire name in quotes, \nn or \0xnn, where "nn" is the two-digit hexidecimal number. For example: 

   102.54.94.97   rhinodc     #DOM:rhino   #the rhino domain DC
   11.14.21.96    "appl\0x1f"              #internal db application
                                            gateway
NOTE: By using the special naming extension of the Windows NT LMHOSTS files, you surrender backward compatibility with Microsoft LAN Manager. (The LAN Manager TCP/IP implementation does not recognize the hexidecimal format.)

For additional information on LMHOSTS files in Windows NT, query on the following word in the Microsoft Knowledge Base: 

   lmhosts

Additional query words: prodnt
Keywords : kbnetwork NTSrvWkst nttcp
Version : 3.1 4.0
Platform : WINDOWS

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Last reviewed: April 4, 1997
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