| From deep in the bowels of the Microsoft documentaiton:
Microsoft Windows NT 4.0 Server Resource Kit
MS Windows NT Server 4.0 Networking Guide
Appendix G: NetBIOS Names
Microsoft networking services running on a Windows NT-based computer are
identified by using NetBIOS names. NetBIOS names can be used to identify
a unique computer or a special group of computers. NetBIOS names are 16
characters in length and the 16th character is a special character used
by most Microsoft networking services. Various networking service and
group names are registered with a WINS server by direct name registration
from WINS-enabled computers or by broadcast on the local subnet by non-WINS
enabled computers. The nbtstat command is a utility that you can use to
obtain information about NetBIOS names. In the following example, the
nbtstat -n command produced this list of registered NetBIOS names for
user "Davemac" logged on to a computer configured as a primary domain
controller and running under Windows NT Server with Internet Information
Server.
Name 16TH Type Description
DAVEMAC1 <00> UNIQUE workstation service name
DAVEMAC1 <20> UNIQUE server service name
DAVEMACD <00> GROUP domain name
DAVEMACD <1C> GROUP domain controller name
DAVEMACD <1B> UNIQUE master browser name
DAVEMAC1 <03> UNIQUE messenger name
INet~Services <1C> GROUP Internet Information Server group name
IS~DAVEMAC1.... <00> UNIQUE Internet Information Server unique name
DAVEMAC1+++++++ <BF> UNIQUE network monitor name
NetBIOS Unique Names
The following table lists the default 16th byte value appended to unique
NetBIOS computer names by various Microsoft networking services.
Table G.1 16th Byte Character for Unique Names
16th Byte Identifies
<00> Workstation service name. In general, this is the name that is
referred to as the NetBIOS computer name.
<03> Messenger service name used when receiving and sending messages.
This is the name that is registered with the WINS server as the
messenger service on the WINS client and is usually appended to
the computer name and to the name of the user currently logged
on to the computer.
<1B> Domain master browser name. This name identifies the primary
domain controller and indicates which clients and other browsers
to use to contact the domain master browser.
<06> RAS server service
<1F> NetDDE service
<20> Server service name used to provide sharepoints for file sharing.
<21> RAS client
<BE> Network Monitor agent
<BF> Network Monitor utility
NetBIOS Group Names
The following table lists the default 16th byte character appended
to commonly used NetBIOS group names.
Table G.2 Default 16th Byte Character for NetBIOS Group Names
16th Byte Identifies
<1C> A domain group name, which contains a list of the specific addresses
of computers that have registered the domain name. The domain
controller registers this name. WINS treats this as a domain group,
where each member of the group must renew its name individually or
be released. The domain group is limited to 25 names. When a static
1C name is replicated that clashes with a dynamic 1C name on another
WINS server, a union of the members is added, and the record is marked
as static. If the record is static, members of the group do not have
to renew their IP addresses.
<1D> The master browser name that is used by clients to access the master
browser. There is one master browser on a subnet. WINS servers return
a positive response to domain name registrations but do not store the
domain name in their databases. If a computer sends a domain name
query to the WINS server, the WINS server returns a negative response.
If the computer that sent the domain name query is configured as h-node
or m-node, it will then broadcast the name query to resolve the name.
<1E> A Normal group name. Browsers can broadcast to this name and listen on
it to elect a master browser. These broadcasts are for the local
subnet and should not cross routers.
<20> A special group name called the Internet group that is registered
with WINS servers to identify groups of computers for administrative
purposes. For example, "printersg" could be a registered group name
used to identify an administrative group of print servers.
_MSBROWSE_,
Instead of a single appended 16th character, "_MSBROWSE_," is appended
to a domain name and broadcast on the local subnet to announce the
domain to other master browsers.
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