What are the NetBIOS suffixes (16th character)?

John Savill

February 20, 2000

1 Min Read
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A. NetBIOS names are 16 characters long with the 16th characteralways being a special character identifying the type of name, for example adomain NetBIOS record with 1C as the 16th character is a domain controller (thisis how they are located). The full list is as follows:

Name                Number(h)  Type  Usage--------------------------------------------------------------------------         00       U    Workstation Service         01       U    Messenger Service<\--__MSBROWSE__>     01       G    Master Browser         03       U    Messenger Service         06       U    RAS Server Service         1F       U    NetDDE Service         20       U    File Server Service         21       U    RAS Client Service         22       U    Microsoft Exchange Interchange(MSMail                                     Connector)         23       U    Microsoft Exchange Store         24       U    Microsoft Exchange Directory         30       U    Modem Sharing Server Service         31       U    Modem Sharing Client Service         43       U    SMS Clients Remote Control         44       U    SMS Administrators Remote Control                                     Tool         45       U    SMS Clients Remote Chat         46       U    SMS Clients Remote Transfer         4C       U    DEC Pathworks TCPIP service on                                     Windows NT         52       U    DEC Pathworks TCPIP service on                                     Windows NT         87       U    Microsoft Exchange MTA         6A       U    Microsoft Exchange IMC         BE       U    Network Monitor Agent         BF       U    Network Monitor Application             03       U    Messenger Service               00       G    Domain Name               1B       U    Domain Master Browser               1C       G    Domain Controllers               1D       U    Master Browser               1E       G    Browser Service Elections        1C       G    IIS     00       U    IIS

Where the record is U only one IP address may be assigned, where G its agroup and may have multiple IP addresses. M is a multihomed machine (a machinewith more than one network card) and I is an Internet group.

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