General Slash Masks
| 1 Network with 254 Hosts (unique IPs) |
| Subnet Mask 255.255.255.0 (/24) |
| Addresses 1-254 (network number = 0; broadcast = 255) |
| 2 Networks with 126 Hosts (unique IPs) |
| Subnet Mask 255.255.255.128 (/25) |
| Addresses 1-126 (network number = 0; broadcast = 127) |
| Addresses 129-254 (network number = 128; broadcast = 255) |
| 4 Networks with 62 Hosts (unique IPs) |
| Subnet Mask 255.255.255.192 (/26) |
| Addresses 1-62 (network number = 0; broadcast = 63) |
| Addresses 65-126 (network number = 64; broadcast = 127) |
| Addresses 129-190 (network number = 128; broadcast = 191) |
| Addresses 193-254 (network number = 192; broadcast = 255) |
| 8 Networks with 30 Hosts (unique IPs) |
| Subnet Mask 255.255.255.224 (/27) |
| Addresses 1-30 (network number = 0; broadcast = 31) |
| Addresses 33-62 (network number = 32; broadcast = 63) |
| Addresses 65-94 (network number = 64; broadcast = 95) |
| Addresses 97-126 (network number = 96; broadcast = 127) |
| Addresses 129-158 (network number = 128; broadcast = 159) |
| Addresses 161-190 (network number = 160; broadcast = 191) |
| Addresses 193-222 (network number = 192; broadcast = 223) |
| Addresses 225-254 (network number = 224; broadcast = 255) |
| 16 Networks with 14 Hosts (unique IPs) |
| Subnet Mask 255.255.255.240 (/28) |
| Addresses 1-14 (network number = 0; broadcast = 15) |
| Addresses 17-30 (network number = 16; broadcast = 31) |
| Addresses 33-46 (network number = 32; broadcast = 47) |
| Addresses 49-62 (network number = 48; broadcast = 63) |
| Addresses 65-78 (network number = 64; broadcast = 79) |
| Addresses 81-94 (network number = 80; broadcast = 95) |
| Addresses 97-110 (network number = 96; broadcast = 111) |
| Addresses 113-126 (network number = 112; broadcast = 127) |
| Addresses 129-142 (network number = 128; broadcast = 143) |
| Addresses 145-158 (network number = 144; broadcast = 159) |
| Addresses 161-174 (network number = 160; broadcast = 175) |
| Addresses 177-190 (network number = 176; broadcast = 191) |
| Addresses 193-206 (network number = 192; broadcast = 207) |
| Addresses 209-222 (network number = 208; broadcast = 223) |
| Addresses 225-238 (network number = 224; broadcast = 239) |
| Addresses 241-254 (network number = 240; broadcast = 255) |
| 32 Networks with 6 Hosts (unique IPs) |
| Subnet Mask 255.255.255.248 (/29) |
| Addresses 1-6 (network number = 0; broadcast = 7) |
| Addresses 9-14 (network number = 8; broadcast = 15) |
| Addresses 17-22 (network number = 16; broadcast = 23) |
| Addresses 25-30 (network number = 24; broadcast = 31) |
| Addresses 33-38 (network number = 32; broadcast = 39) |
| Addresses 41-46 (network number = 40; broadcast = 47) |
| Addresses 49-54 (network number = 48; broadcast = 55) |
| Addresses 57-62 (network number = 56; broadcast = 63) |
| Addresses 65-70 (network number = 64; broadcast = 71) |
| Addresses 73-78 (network number = 72; broadcast = 79) |
| Addresses 81-86 (network number = 80; broadcast = 87) |
| Addresses 89-94 (network number = 88; broadcast = 95) |
| Addresses 97-102 (network number = 96; broadcast = 103) |
| Addresses 105-110 (network number = 104; broadcast = 111) |
| Addresses 113-118 (network number = 112; broadcast = 119) |
| Addresses 121-126 (network number = 120; broadcast = 127) |
| Addresses 129-134 (network number = 128; broadcast = 135) |
| Addresses 137-142 (network number = 136; broadcast = 143) |
| Addresses 145-150 (network number = 144; broadcast = 151) |
| Addresses 153-158 (network number = 152; broadcast = 159) |
| Addresses 161-166 (network number = 160; broadcast = 167) |
| Addresses 169-174 (network number = 168; broadcast = 175) |
| Addresses 177-182 (network number = 176; broadcast = 183) |
| Addresses 185-190 (network number = 184; broadcast = 191) |
| Addresses 193-198 (network number = 192; broadcast = 199) |
| Addresses 201-206 (network number = 200; broadcast = 207) |
| Addresses 209-214 (network number = 208; broadcast = 215) |
| Addresses 217-222 (network number = 216; broadcast = 223) |
| Addresses 225-230 (network number = 224; broadcast = 231) |
| Addresses 233-238 (network number = 232; broadcast = 239) |
| Addresses 241-246 (network number = 240; broadcast = 247) |
| Addresses 249-254 (network number = 248; broadcast = 255) |
General Slash Masks
| MASK | / | Unique IPs |
| 255.255.255.252 | /30 | 4 hosts |
| 255.255.255.248 | /29 | 8 hosts |
| 255.255.255.240 | /28 | 16 hosts |
| 255.255.255.224 | /27 | 32 hosts |
| 255.255.255.192 | /26 | 64 hosts |
| 255.255.255.128 | /25 | 128 hosts |
| 255.255.255.0 | /24 | 256 hosts (Class C) |
| 255.255.254.0 | /23 | 2 Class C's |
| 255.255.252.0 | /22 | 4 Class C's |
| 255.255.248.0 | /21 | 8 Class C's |
| 255.255.240.0 | /20 | 16 Class C's |
| 255.255.224.0 | /19 | 32 Class C's |
| 255.255.192.0 | /18 | 64 Class C's |
| 255.255.128.0 | /17 | 128 Class C's |
| 255.255.0.0 | /16 | 256 Class C's (Class B) |
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