254 126 62 30 14 6 2 0 Subnets <
128 64 32 16 8 4 2 1 Range >
128 192 224 240 248 252 254 255 Subnet Mask >
* SUBTRACT 2 FOR THE MAXIMUM NUMBER OF HOST ADDRESSES AVAILABLE
4,294,967,296
2,147,483,648
1,073,741,824
536,870,912 
268,435,456
134,217,728
67,108,864
33,554,432
 
CLASS A HOSTS
16,777,216
8,388,608
4,194,304
2,097,152 
1,048,576
524,288
262,144
131,072

CLASS B HOSTS
65,536
32,768
16,384
8,192  
4,096
2,048
1,024
512

CLASS C HOSTS
256
128
64
32 
16
8
4
2
CLASS A 1-126
LOOPBACK 127 DIAGNOSITC
CLASS B 128-191
CLASS C 192-223
EXAMPLE OF SUBNETTED CLASS B INTO 6 CLASS C SUBNETS:  RANGE = 32; MASK = 224
XXX 0-31 CAN'T USE ANY - CONTAINS ALL ZEROS
32-63 CAN'T USE 32 (ALL 0'S) AND 63 (ALL 1'S)
64-95 CAN'T USE 64 (ALL 0'S) AND 95 (ALL 2'S)
96-127 CAN'T USE 96 (ALL 0'S) AND 127 (ALL 1'S)
128-159 CAN'T USE 128 (ALL 0'S AND 159 (ALL 1'S)
160-191 CAN'T USE 160 (ALL 0'S AND 191 (ALL 1'S)
192-223 CAN'T USE 192 (ALL 0'S AND 223 (ALL1'S)
XXX 224-255 CAN'T USE ANY - CONTAINS 255
AN EXAMPLE OF A VALID IP ADDRESS IS 129.119.107.33
THE SUBNET MASK IS 255.255.255.224
WINS NODE TYPES
1 = B-NODE = BROADCAST
2 = P-NODE = PEER TO PEER
4 = M-NODE = MIXED (BROADCAST THEN WINS)
8 = H-NODE = HYBRID (WINS THEN BROADCAST) ****** PREFERRED
WINS NETBIOS 16TH CHARACTER DESCRIPTION WORKGROUP
16TH BIT     COMPUTER     OR DOMAIN  
00 WORKSTATION SERVICE DOMAIN NAME
03 MESSENGER SERVICE USERNAME
06 ROUTER OR MULTI-HOMED PC
06 RAS SERVER SERVICE
20 SERVER SERVICE
1B DOMAIN MASTER BROWSER
1B PDC
1C DOMAIN CONTROLLER
1D LOCAL MASTER BROWSER 
1E BROWSER ELECTIONS
1