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Appendix E: Understanding IP and IP addressing 153
DMS-100 Family EIU User Guide TELECOM12
Figure 30 Subnet mask: class A
Base_Tel-10
IPNETWRK
No. subnets No. hosts netmask Netmask in binary format subnet size
2 4194302 255.192.0.0 (11111111.11000000.00000000.00000000) 2
6 2097150 255.224.0.0 (11111111.11100000.00000000.00000000) 3
14 1048574 255.240.0.0 (11111111.11110000.00000000.00000000) 4
30 524286 255.248.0.0 (11111111.11111000.00000000.00000000) 5
62 262142 255.252.0.0 (11111111.11111100.00000000.00000000) 6
126 131070 255.254.0.0 (11111111.11111110.00000000.00000000) 7
254 65534 255.255.0.0 (11111111.11111111.00000000.00000000) 8
510 32766 255.255.128.0 (11111111.11111111.10000000.00000000) 9
1022 16382 255.255.192.0 (11111111.11111111.11000000.00000000) 10
2046 8190 255.255.224.0 (11111111.11111111.11100000.00000000) 11
4094 4094 255.255.240.0 (11111111.11111111.11110000.00000000) 12
8190 2046 255.255.248.0 (11111111.11111111.11111000.00000000) 13
16382 1022 255.255.252.0 (11111111.11111111.11111100.00000000) 14
32766 510 255.255.254.0 (11111111.11111111.11111110.00000000) 15
65534 254 255.255.255.0 (11111111.11111111.11111111.00000000) 16
131070 126 255.255.255.128 (11111111.11111111.11111111.10000000) 17
262142 62 255.255.255.192 (11111111.11111111.11111111.11000000) 18
524286 30 255.255.255.224 (11111111.11111111.11111111.11100000) 19
1048574 14 255.255.255.240 (11111111.11111111.11111111.11110000) 20
2097150 6 255.255.255.248 (11111111.11111111.11111111.11111000) 21
4194302 2 255.255.255.252 (11111111.11111111.11111111.11111100) 22
Host/Router DMS
CLASS A subnet masks
Note:
The CORWAN (Nortel LAN network 47.XX.XX.XX) is a class A network with a 12 bit subnet.